diff --git a/asm/nonmatchings/code_28910_len_5090/func_8004DA0C.s b/asm/nonmatchings/code_28910_len_5090/func_8004DA0C.s
deleted file mode 100644
index 823f6ef476..0000000000
--- a/asm/nonmatchings/code_28910_len_5090/func_8004DA0C.s
+++ /dev/null
@@ -1,33 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8004DA0C
-/* 28E0C 8004DA0C 27BDFFE0 */  addiu     $sp, $sp, -0x20
-/* 28E10 8004DA10 AFB10014 */  sw        $s1, 0x14($sp)
-/* 28E14 8004DA14 0080882D */  daddu     $s1, $a0, $zero
-/* 28E18 8004DA18 AFB00010 */  sw        $s0, 0x10($sp)
-/* 28E1C 8004DA1C 0000802D */  daddu     $s0, $zero, $zero
-/* 28E20 8004DA20 1220000D */  beqz      $s1, .L8004DA58
-/* 28E24 8004DA24 AFBF0018 */   sw       $ra, 0x18($sp)
-/* 28E28 8004DA28 0C0135E5 */  jal       func_8004D794
-/* 28E2C 8004DA2C 00000000 */   nop      
-/* 28E30 8004DA30 0040202D */  daddu     $a0, $v0, $zero
-/* 28E34 8004DA34 50800009 */  beql      $a0, $zero, .L8004DA5C
-/* 28E38 8004DA38 24100002 */   addiu    $s0, $zero, 2
-/* 28E3C 8004DA3C 8C82001C */  lw        $v0, 0x1c($a0)
-/* 28E40 8004DA40 16220007 */  bne       $s1, $v0, .L8004DA60
-/* 28E44 8004DA44 0200102D */   daddu    $v0, $s0, $zero
-/* 28E48 8004DA48 0C0136AA */  jal       func_8004DAA8
-/* 28E4C 8004DA4C 00000000 */   nop      
-/* 28E50 8004DA50 08013698 */  j         .L8004DA60
-/* 28E54 8004DA54 0200102D */   daddu    $v0, $s0, $zero
-.L8004DA58:
-/* 28E58 8004DA58 24100003 */  addiu     $s0, $zero, 3
-.L8004DA5C:
-/* 28E5C 8004DA5C 0200102D */  daddu     $v0, $s0, $zero
-.L8004DA60:
-/* 28E60 8004DA60 8FBF0018 */  lw        $ra, 0x18($sp)
-/* 28E64 8004DA64 8FB10014 */  lw        $s1, 0x14($sp)
-/* 28E68 8004DA68 8FB00010 */  lw        $s0, 0x10($sp)
-/* 28E6C 8004DA6C 03E00008 */  jr        $ra
-/* 28E70 8004DA70 27BD0020 */   addiu    $sp, $sp, 0x20
diff --git a/asm/nonmatchings/code_28910_len_5090/func_8004DAA8.s b/asm/nonmatchings/code_28910_len_5090/func_8004DAA8.s
deleted file mode 100644
index 5f5c5bc996..0000000000
--- a/asm/nonmatchings/code_28910_len_5090/func_8004DAA8.s
+++ /dev/null
@@ -1,19 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8004DAA8
-/* 28EA8 8004DAA8 27BDFFE8 */  addiu     $sp, $sp, -0x18
-/* 28EAC 8004DAAC AFBF0010 */  sw        $ra, 0x10($sp)
-/* 28EB0 8004DAB0 90820221 */  lbu       $v0, 0x221($a0)
-/* 28EB4 8004DAB4 10400007 */  beqz      $v0, .L8004DAD4
-/* 28EB8 8004DAB8 24020004 */   addiu    $v0, $zero, 4
-/* 28EBC 8004DABC A0820221 */  sb        $v0, 0x221($a0)
-/* 28EC0 8004DAC0 24020001 */  addiu     $v0, $zero, 1
-/* 28EC4 8004DAC4 AC820010 */  sw        $v0, 0x10($a0)
-/* 28EC8 8004DAC8 AC820008 */  sw        $v0, 8($a0)
-/* 28ECC 8004DACC 0C014E86 */  jal       func_80053A18
-/* 28ED0 8004DAD0 2484002C */   addiu    $a0, $a0, 0x2c
-.L8004DAD4:
-/* 28ED4 8004DAD4 8FBF0010 */  lw        $ra, 0x10($sp)
-/* 28ED8 8004DAD8 03E00008 */  jr        $ra
-/* 28EDC 8004DADC 27BD0018 */   addiu    $sp, $sp, 0x18
diff --git a/asm/nonmatchings/code_2e230_len_2190/func_80053A18.s b/asm/nonmatchings/code_2e230_len_2190/func_80053A18.s
deleted file mode 100644
index 6c3a79075d..0000000000
--- a/asm/nonmatchings/code_2e230_len_2190/func_80053A18.s
+++ /dev/null
@@ -1,8 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_80053A18
-/* 2EE18 80053A18 A480000A */  sh        $zero, 0xa($a0)
-/* 2EE1C 80053A1C AC800004 */  sw        $zero, 4($a0)
-/* 2EE20 80053A20 03E00008 */  jr        $ra
-/* 2EE24 80053A24 AC80000C */   sw       $zero, 0xc($a0)
diff --git a/asm/nonmatchings/code_303c0_len_3e10/func_800559C4.s b/asm/nonmatchings/code_303c0_len_3e10/func_800559C4.s
deleted file mode 100644
index c0e9dfc395..0000000000
--- a/asm/nonmatchings/code_303c0_len_3e10/func_800559C4.s
+++ /dev/null
@@ -1,11 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_800559C4
-/* 30DC4 800559C4 27BDFFE8 */  addiu     $sp, $sp, -0x18
-/* 30DC8 800559C8 AFBF0010 */  sw        $ra, 0x10($sp)
-/* 30DCC 800559CC 0C013683 */  jal       func_8004DA0C
-/* 30DD0 800559D0 00000000 */   nop      
-/* 30DD4 800559D4 8FBF0010 */  lw        $ra, 0x10($sp)
-/* 30DD8 800559D8 03E00008 */  jr        $ra
-/* 30DDC 800559DC 27BD0018 */   addiu    $sp, $sp, 0x18
diff --git a/asm/nonmatchings/code_e0b30_len_b80/_set_music_track.s b/asm/nonmatchings/code_e0b30_len_b80/_set_music_track.s
deleted file mode 100644
index 12aff6540b..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/_set_music_track.s
+++ /dev/null
@@ -1,88 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel _set_music_track
-/* E0EE0 8014A7E0 27BDFFD0 */  addiu     $sp, $sp, -0x30
-/* E0EE4 8014A7E4 AFB20018 */  sw        $s2, 0x18($sp)
-/* E0EE8 8014A7E8 00A0902D */  daddu     $s2, $a1, $zero
-/* E0EEC 8014A7EC 3C058007 */  lui       $a1, %hi(gGameStatusPtr)
-/* E0EF0 8014A7F0 8CA5419C */  lw        $a1, %lo(gGameStatusPtr)($a1)
-/* E0EF4 8014A7F4 AFB3001C */  sw        $s3, 0x1c($sp)
-/* E0EF8 8014A7F8 8FB30040 */  lw        $s3, 0x40($sp)
-/* E0EFC 8014A7FC AFB10014 */  sw        $s1, 0x14($sp)
-/* E0F00 8014A800 00C0882D */  daddu     $s1, $a2, $zero
-/* E0F04 8014A804 AFB50024 */  sw        $s5, 0x24($sp)
-/* E0F08 8014A808 00E0A82D */  daddu     $s5, $a3, $zero
-/* E0F0C 8014A80C AFBF0028 */  sw        $ra, 0x28($sp)
-/* E0F10 8014A810 AFB40020 */  sw        $s4, 0x20($sp)
-/* E0F14 8014A814 AFB00010 */  sw        $s0, 0x10($sp)
-/* E0F18 8014A818 80A20071 */  lb        $v0, 0x71($a1)
-/* E0F1C 8014A81C 10400003 */  beqz      $v0, .L8014A82C
-/* E0F20 8014A820 0260A02D */   daddu    $s4, $s3, $zero
-/* E0F24 8014A824 08052A3D */  j         .L8014A8F4
-/* E0F28 8014A828 24020001 */   addiu    $v0, $zero, 1
-.L8014A82C:
-/* E0F2C 8014A82C 3C028016 */  lui       $v0, 0x8016
-/* E0F30 8014A830 24429AF0 */  addiu     $v0, $v0, -0x6510
-/* E0F34 8014A834 00041840 */  sll       $v1, $a0, 1
-/* E0F38 8014A838 00641821 */  addu      $v1, $v1, $a0
-/* E0F3C 8014A83C 00031900 */  sll       $v1, $v1, 4
-/* E0F40 8014A840 80A4007A */  lb        $a0, 0x7a($a1)
-/* E0F44 8014A844 14800008 */  bnez      $a0, .L8014A868
-/* E0F48 8014A848 00628021 */   addu     $s0, $v1, $v0
-/* E0F4C 8014A84C 8E040018 */  lw        $a0, 0x18($s0)
-/* E0F50 8014A850 0C015671 */  jal       func_800559C4
-/* E0F54 8014A854 00000000 */   nop      
-/* E0F58 8014A858 96030000 */  lhu       $v1, ($s0)
-/* E0F5C 8014A85C 24020001 */  addiu     $v0, $zero, 1
-/* E0F60 8014A860 08052A3C */  j         .L8014A8F0
-/* E0F64 8014A864 3063FFFE */   andi     $v1, $v1, 0xfffe
-.L8014A868:
-/* E0F68 8014A868 0C05290C */  jal       get_default_variation_for_song
-/* E0F6C 8014A86C 0240202D */   daddu    $a0, $s2, $zero
-/* E0F70 8014A870 04430001 */  bgezl     $v0, .L8014A878
-/* E0F74 8014A874 0040882D */   daddu    $s1, $v0, $zero
-.L8014A878:
-/* E0F78 8014A878 8E020010 */  lw        $v0, 0x10($s0)
-/* E0F7C 8014A87C 14520013 */  bne       $v0, $s2, .L8014A8CC
-/* E0F80 8014A880 24020001 */   addiu    $v0, $zero, 1
-/* E0F84 8014A884 8E020014 */  lw        $v0, 0x14($s0)
-/* E0F88 8014A888 14510010 */  bne       $v0, $s1, .L8014A8CC
-/* E0F8C 8014A88C 24020001 */   addiu    $v0, $zero, 1
-/* E0F90 8014A890 00132400 */  sll       $a0, $s3, 0x10
-/* E0F94 8014A894 0C052B21 */  jal       func_8014AC84
-/* E0F98 8014A898 00042403 */   sra      $a0, $a0, 0x10
-/* E0F9C 8014A89C 96020000 */  lhu       $v0, ($s0)
-/* E0FA0 8014A8A0 30420004 */  andi      $v0, $v0, 4
-/* E0FA4 8014A8A4 50400013 */  beql      $v0, $zero, .L8014A8F4
-/* E0FA8 8014A8A8 24020002 */   addiu    $v0, $zero, 2
-/* E0FAC 8014A8AC 8E040018 */  lw        $a0, 0x18($s0)
-/* E0FB0 8014A8B0 0C0156E0 */  jal       func_80055B80
-/* E0FB4 8014A8B4 00000000 */   nop      
-/* E0FB8 8014A8B8 96020000 */  lhu       $v0, ($s0)
-/* E0FBC 8014A8BC 3042FFFB */  andi      $v0, $v0, 0xfffb
-/* E0FC0 8014A8C0 A6020000 */  sh        $v0, ($s0)
-/* E0FC4 8014A8C4 08052A3D */  j         .L8014A8F4
-/* E0FC8 8014A8C8 24020002 */   addiu    $v0, $zero, 2
-.L8014A8CC:
-/* E0FCC 8014A8CC 96030000 */  lhu       $v1, ($s0)
-/* E0FD0 8014A8D0 0040202D */  daddu     $a0, $v0, $zero
-/* E0FD4 8014A8D4 3C018016 */  lui       $at, 0x8016
-/* E0FD8 8014A8D8 A4349AE0 */  sh        $s4, -0x6520($at)
-/* E0FDC 8014A8DC AE120010 */  sw        $s2, 0x10($s0)
-/* E0FE0 8014A8E0 AE110014 */  sw        $s1, 0x14($s0)
-/* E0FE4 8014A8E4 AE150004 */  sw        $s5, 4($s0)
-/* E0FE8 8014A8E8 A6040002 */  sh        $a0, 2($s0)
-/* E0FEC 8014A8EC 3063FFFD */  andi      $v1, $v1, 0xfffd
-.L8014A8F0:
-/* E0FF0 8014A8F0 A6030000 */  sh        $v1, ($s0)
-.L8014A8F4:
-/* E0FF4 8014A8F4 8FBF0028 */  lw        $ra, 0x28($sp)
-/* E0FF8 8014A8F8 8FB50024 */  lw        $s5, 0x24($sp)
-/* E0FFC 8014A8FC 8FB40020 */  lw        $s4, 0x20($sp)
-/* E1000 8014A900 8FB3001C */  lw        $s3, 0x1c($sp)
-/* E1004 8014A904 8FB20018 */  lw        $s2, 0x18($sp)
-/* E1008 8014A908 8FB10014 */  lw        $s1, 0x14($sp)
-/* E100C 8014A90C 8FB00010 */  lw        $s0, 0x10($sp)
-/* E1010 8014A910 03E00008 */  jr        $ra
-/* E1014 8014A914 27BD0030 */   addiu    $sp, $sp, 0x30
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014A498.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014A498.s
deleted file mode 100644
index 013083418f..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014A498.s
+++ /dev/null
@@ -1,43 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014A498
-/* E0B98 8014A498 27BDFFE8 */  addiu     $sp, $sp, -0x18
-/* E0B9C 8014A49C AFBF0010 */  sw        $ra, 0x10($sp)
-/* E0BA0 8014A4A0 0000282D */  daddu     $a1, $zero, $zero
-/* E0BA4 8014A4A4 3C068015 */  lui       $a2, 0x8015
-/* E0BA8 8014A4A8 24C6F6F0 */  addiu     $a2, $a2, -0x910
-/* E0BAC 8014A4AC 24C70030 */  addiu     $a3, $a2, 0x30
-/* E0BB0 8014A4B0 3C048016 */  lui       $a0, 0x8016
-/* E0BB4 8014A4B4 24849AF0 */  addiu     $a0, $a0, -0x6510
-.L8014A4B8:
-/* E0BB8 8014A4B8 0080182D */  daddu     $v1, $a0, $zero
-/* E0BBC 8014A4BC 00C0102D */  daddu     $v0, $a2, $zero
-.L8014A4C0:
-/* E0BC0 8014A4C0 8C480000 */  lw        $t0, ($v0)
-/* E0BC4 8014A4C4 8C490004 */  lw        $t1, 4($v0)
-/* E0BC8 8014A4C8 8C4A0008 */  lw        $t2, 8($v0)
-/* E0BCC 8014A4CC 8C4B000C */  lw        $t3, 0xc($v0)
-/* E0BD0 8014A4D0 AC680000 */  sw        $t0, ($v1)
-/* E0BD4 8014A4D4 AC690004 */  sw        $t1, 4($v1)
-/* E0BD8 8014A4D8 AC6A0008 */  sw        $t2, 8($v1)
-/* E0BDC 8014A4DC AC6B000C */  sw        $t3, 0xc($v1)
-/* E0BE0 8014A4E0 24420010 */  addiu     $v0, $v0, 0x10
-/* E0BE4 8014A4E4 1447FFF6 */  bne       $v0, $a3, .L8014A4C0
-/* E0BE8 8014A4E8 24630010 */   addiu    $v1, $v1, 0x10
-/* E0BEC 8014A4EC 24A50001 */  addiu     $a1, $a1, 1
-/* E0BF0 8014A4F0 28A20002 */  slti      $v0, $a1, 2
-/* E0BF4 8014A4F4 1440FFF0 */  bnez      $v0, .L8014A4B8
-/* E0BF8 8014A4F8 24840030 */   addiu    $a0, $a0, 0x30
-/* E0BFC 8014A4FC 24020008 */  addiu     $v0, $zero, 8
-/* E0C00 8014A500 3C018016 */  lui       $at, %hi(D_80159AE2)
-/* E0C04 8014A504 A4229AE2 */  sh        $v0, %lo(D_80159AE2)($at)
-/* E0C08 8014A508 3C018016 */  lui       $at, %hi(D_80159AE4)
-/* E0C0C 8014A50C A4229AE4 */  sh        $v0, %lo(D_80159AE4)($at)
-/* E0C10 8014A510 3C018016 */  lui       $at, 0x8016
-/* E0C14 8014A514 A4229AE6 */  sh        $v0, -0x651a($at)
-/* E0C18 8014A518 0C015869 */  jal       func_800561A4
-/* E0C1C 8014A51C 24040008 */   addiu    $a0, $zero, 8
-/* E0C20 8014A520 8FBF0010 */  lw        $ra, 0x10($sp)
-/* E0C24 8014A524 03E00008 */  jr        $ra
-/* E0C28 8014A528 27BD0018 */   addiu    $sp, $sp, 0x18
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014A548.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014A548.s
index 5c779984ab..c9dbd5c772 100644
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014A548.s
+++ b/asm/nonmatchings/code_e0b30_len_b80/func_8014A548.s
@@ -27,7 +27,7 @@ glabel func_8014A548
 /* E0C9C 8014A59C 00220821 */  addu      $at, $at, $v0
 /* E0CA0 8014A5A0 8C221290 */  lw        $v0, 0x1290($at)
 /* E0CA4 8014A5A4 00400008 */  jr        $v0
-/* E0CA8 8014A5A8 00000000 */   nop      
+/* E0CA8 8014A5A8 00000000 */   nop
 /* E0CAC 8014A5AC 96230000 */  lhu       $v1, ($s1)
 /* E0CB0 8014A5B0 30620001 */  andi      $v0, $v1, 1
 /* E0CB4 8014A5B4 1040001D */  beqz      $v0, .L8014A62C
@@ -37,24 +37,24 @@ glabel func_8014A548
 /* E0CC4 8014A5C4 1040000B */  beqz      $v0, .L8014A5F4
 /* E0CC8 8014A5C8 30620004 */   andi     $v0, $v1, 4
 /* E0CCC 8014A5CC 14400005 */  bnez      $v0, .L8014A5E4
-/* E0CD0 8014A5D0 00000000 */   nop      
+/* E0CD0 8014A5D0 00000000 */   nop
 /* E0CD4 8014A5D4 0C015671 */  jal       func_800559C4
 /* E0CD8 8014A5D8 8E040016 */   lw       $a0, 0x16($s0)
 /* E0CDC 8014A5DC 08052987 */  j         .L8014A61C
-/* E0CE0 8014A5E0 00000000 */   nop      
+/* E0CE0 8014A5E0 00000000 */   nop
 .L8014A5E4:
 /* E0CE4 8014A5E4 0C0156BC */  jal       func_80055AF0
 /* E0CE8 8014A5E8 8E040016 */   lw       $a0, 0x16($s0)
 /* E0CEC 8014A5EC 08052987 */  j         .L8014A61C
-/* E0CF0 8014A5F0 00000000 */   nop      
+/* E0CF0 8014A5F0 00000000 */   nop
 .L8014A5F4:
 /* E0CF4 8014A5F4 14400006 */  bnez      $v0, .L8014A610
-/* E0CF8 8014A5F8 00000000 */   nop      
+/* E0CF8 8014A5F8 00000000 */   nop
 /* E0CFC 8014A5FC 8E040016 */  lw        $a0, 0x16($s0)
 /* E0D00 8014A600 0C0156AF */  jal       func_80055ABC
 /* E0D04 8014A604 0000302D */   daddu    $a2, $zero, $zero
 /* E0D08 8014A608 08052987 */  j         .L8014A61C
-/* E0D0C 8014A60C 00000000 */   nop      
+/* E0D0C 8014A60C 00000000 */   nop
 .L8014A610:
 /* E0D10 8014A610 8E040016 */  lw        $a0, 0x16($s0)
 /* E0D14 8014A614 0C0156EE */  jal       func_80055BB8
@@ -82,7 +82,7 @@ glabel func_8014A548
 /* E0D5C 8014A65C A6220000 */   sh       $v0, ($s1)
 /* E0D60 8014A660 8E040016 */  lw        $a0, 0x16($s0)
 /* E0D64 8014A664 0C01567F */  jal       func_800559FC
-/* E0D68 8014A668 00000000 */   nop      
+/* E0D68 8014A668 00000000 */   nop
 /* E0D6C 8014A66C 5440004D */  bnel      $v0, $zero, .L8014A7A4
 /* E0D70 8014A670 26520001 */   addiu    $s2, $s2, 1
 /* E0D74 8014A674 96220000 */  lhu       $v0, ($s1)
@@ -100,7 +100,7 @@ glabel func_8014A548
 /* E0DA4 8014A6A4 30620010 */   andi     $v0, $v1, 0x10
 /* E0DA8 8014A6A8 8E04000E */  lw        $a0, 0xe($s0)
 /* E0DAC 8014A6AC 04810003 */  bgez      $a0, .L8014A6BC
-/* E0DB0 8014A6B0 00000000 */   nop      
+/* E0DB0 8014A6B0 00000000 */   nop
 /* E0DB4 8014A6B4 080529E8 */  j         .L8014A7A0
 /* E0DB8 8014A6B8 A6000000 */   sh       $zero, ($s0)
 .L8014A6BC:
@@ -113,7 +113,7 @@ glabel func_8014A548
 /* E0DD4 8014A6D4 96220000 */  lhu       $v0, ($s1)
 /* E0DD8 8014A6D8 30420020 */  andi      $v0, $v0, 0x20
 /* E0DDC 8014A6DC 1040000C */  beqz      $v0, .L8014A710
-/* E0DE0 8014A6E0 00000000 */   nop      
+/* E0DE0 8014A6E0 00000000 */   nop
 /* E0DE4 8014A6E4 8602000C */  lh        $v0, 0xc($s0)
 /* E0DE8 8014A6E8 8607000A */  lh        $a3, 0xa($s0)
 /* E0DEC 8014A6EC AFA20010 */  sw        $v0, 0x10($sp)
@@ -128,8 +128,8 @@ glabel func_8014A548
 .L8014A710:
 /* E0E10 8014A710 3C048016 */  lui       $a0, 0x8016
 /* E0E14 8014A714 84849AE0 */  lh        $a0, -0x6520($a0)
-/* E0E18 8014A718 0C052B21 */  jal       func_8014AC84
-/* E0E1C 8014A71C 00000000 */   nop      
+/* E0E18 8014A718 0C052B21 */  jal       transition_music_volume_to
+/* E0E1C 8014A71C 00000000 */   nop
 .L8014A720:
 /* E0E20 8014A720 8E040016 */  lw        $a0, 0x16($s0)
 /* E0E24 8014A724 0C01565C */  jal       func_80055970
@@ -143,7 +143,7 @@ glabel func_8014A548
 /* E0E44 8014A744 A6000000 */   sh       $zero, ($s0)
 .L8014A748:
 /* E0E48 8014A748 10400005 */  beqz      $v0, .L8014A760
-/* E0E4C 8014A74C 00000000 */   nop      
+/* E0E4C 8014A74C 00000000 */   nop
 /* E0E50 8014A750 A6000000 */  sh        $zero, ($s0)
 /* E0E54 8014A754 96220000 */  lhu       $v0, ($s1)
 /* E0E58 8014A758 080529E7 */  j         .L8014A79C
@@ -151,7 +151,7 @@ glabel func_8014A548
 .L8014A760:
 /* E0E60 8014A760 8E04002A */  lw        $a0, 0x2a($s0)
 /* E0E64 8014A764 0C0156CA */  jal       func_80055B28
-/* E0E68 8014A768 00000000 */   nop      
+/* E0E68 8014A768 00000000 */   nop
 /* E0E6C 8014A76C 5440000D */  bnel      $v0, $zero, .L8014A7A4
 /* E0E70 8014A770 26520001 */   addiu    $s2, $s2, 1
 /* E0E74 8014A774 8E020022 */  lw        $v0, 0x22($s0)
@@ -174,7 +174,7 @@ glabel func_8014A548
 /* E0EAC 8014A7AC 1440FF75 */  bnez      $v0, .L8014A584
 /* E0EB0 8014A7B0 26310030 */   addiu    $s1, $s1, 0x30
 /* E0EB4 8014A7B4 0C052B25 */  jal       func_8014AC94
-/* E0EB8 8014A7B8 00000000 */   nop      
+/* E0EB8 8014A7B8 00000000 */   nop
 /* E0EBC 8014A7BC 8FBF0030 */  lw        $ra, 0x30($sp)
 /* E0EC0 8014A7C0 8FB5002C */  lw        $s5, 0x2c($sp)
 /* E0EC4 8014A7C4 8FB40028 */  lw        $s4, 0x28($sp)
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014A964.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014A964.s
deleted file mode 100644
index 727dc8afaa..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014A964.s
+++ /dev/null
@@ -1,69 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014A964
-/* E1064 8014A964 27BDFFD0 */  addiu     $sp, $sp, -0x30
-/* E1068 8014A968 AFB40020 */  sw        $s4, 0x20($sp)
-/* E106C 8014A96C 00A0A02D */  daddu     $s4, $a1, $zero
-/* E1070 8014A970 3C058007 */  lui       $a1, %hi(gGameStatusPtr)
-/* E1074 8014A974 8CA5419C */  lw        $a1, %lo(gGameStatusPtr)($a1)
-/* E1078 8014A978 AFB3001C */  sw        $s3, 0x1c($sp)
-/* E107C 8014A97C 8FB30040 */  lw        $s3, 0x40($sp)
-/* E1080 8014A980 AFB10014 */  sw        $s1, 0x14($sp)
-/* E1084 8014A984 00C0882D */  daddu     $s1, $a2, $zero
-/* E1088 8014A988 AFB50024 */  sw        $s5, 0x24($sp)
-/* E108C 8014A98C AFBF0028 */  sw        $ra, 0x28($sp)
-/* E1090 8014A990 AFB20018 */  sw        $s2, 0x18($sp)
-/* E1094 8014A994 AFB00010 */  sw        $s0, 0x10($sp)
-/* E1098 8014A998 80A20071 */  lb        $v0, 0x71($a1)
-/* E109C 8014A99C 8FB20044 */  lw        $s2, 0x44($sp)
-/* E10A0 8014A9A0 10400003 */  beqz      $v0, .L8014A9B0
-/* E10A4 8014A9A4 00E0A82D */   daddu    $s5, $a3, $zero
-/* E10A8 8014A9A8 08052A8C */  j         .L8014AA30
-/* E10AC 8014A9AC 24020001 */   addiu    $v0, $zero, 1
-.L8014A9B0:
-/* E10B0 8014A9B0 3C028016 */  lui       $v0, 0x8016
-/* E10B4 8014A9B4 24429AF0 */  addiu     $v0, $v0, -0x6510
-/* E10B8 8014A9B8 00041840 */  sll       $v1, $a0, 1
-/* E10BC 8014A9BC 00641821 */  addu      $v1, $v1, $a0
-/* E10C0 8014A9C0 00031900 */  sll       $v1, $v1, 4
-/* E10C4 8014A9C4 80A4007A */  lb        $a0, 0x7a($a1)
-/* E10C8 8014A9C8 14800008 */  bnez      $a0, .L8014A9EC
-/* E10CC 8014A9CC 00628021 */   addu     $s0, $v1, $v0
-/* E10D0 8014A9D0 8E040018 */  lw        $a0, 0x18($s0)
-/* E10D4 8014A9D4 0C015671 */  jal       func_800559C4
-/* E10D8 8014A9D8 00000000 */   nop      
-/* E10DC 8014A9DC 96030000 */  lhu       $v1, ($s0)
-/* E10E0 8014A9E0 24020001 */  addiu     $v0, $zero, 1
-/* E10E4 8014A9E4 08052A8B */  j         .L8014AA2C
-/* E10E8 8014A9E8 3063FFFE */   andi     $v1, $v1, 0xfffe
-.L8014A9EC:
-/* E10EC 8014A9EC 0C05290C */  jal       get_default_variation_for_song
-/* E10F0 8014A9F0 0280202D */   daddu    $a0, $s4, $zero
-/* E10F4 8014A9F4 04430001 */  bgezl     $v0, .L8014A9FC
-/* E10F8 8014A9F8 0040882D */   daddu    $s1, $v0, $zero
-.L8014A9FC:
-/* E10FC 8014A9FC 24020001 */  addiu     $v0, $zero, 1
-/* E1100 8014AA00 96030000 */  lhu       $v1, ($s0)
-/* E1104 8014AA04 0040202D */  daddu     $a0, $v0, $zero
-/* E1108 8014AA08 AE150008 */  sw        $s5, 8($s0)
-/* E110C 8014AA0C A613000C */  sh        $s3, 0xc($s0)
-/* E1110 8014AA10 A612000E */  sh        $s2, 0xe($s0)
-/* E1114 8014AA14 AE140010 */  sw        $s4, 0x10($s0)
-/* E1118 8014AA18 AE110014 */  sw        $s1, 0x14($s0)
-/* E111C 8014AA1C A6040002 */  sh        $a0, 2($s0)
-/* E1120 8014AA20 34630020 */  ori       $v1, $v1, 0x20
-/* E1124 8014AA24 A6030000 */  sh        $v1, ($s0)
-/* E1128 8014AA28 3063FFFD */  andi      $v1, $v1, 0xfffd
-.L8014AA2C:
-/* E112C 8014AA2C A6030000 */  sh        $v1, ($s0)
-.L8014AA30:
-/* E1130 8014AA30 8FBF0028 */  lw        $ra, 0x28($sp)
-/* E1134 8014AA34 8FB50024 */  lw        $s5, 0x24($sp)
-/* E1138 8014AA38 8FB40020 */  lw        $s4, 0x20($sp)
-/* E113C 8014AA3C 8FB3001C */  lw        $s3, 0x1c($sp)
-/* E1140 8014AA40 8FB20018 */  lw        $s2, 0x18($sp)
-/* E1144 8014AA44 8FB10014 */  lw        $s1, 0x14($sp)
-/* E1148 8014AA48 8FB00010 */  lw        $s0, 0x10($sp)
-/* E114C 8014AA4C 03E00008 */  jr        $ra
-/* E1150 8014AA50 27BD0030 */   addiu    $sp, $sp, 0x30
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014AA54.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014AA54.s
deleted file mode 100644
index 9141c6f751..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014AA54.s
+++ /dev/null
@@ -1,57 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014AA54
-/* E1154 8014AA54 27BDFFE8 */  addiu     $sp, $sp, -0x18
-/* E1158 8014AA58 3C028016 */  lui       $v0, 0x8016
-/* E115C 8014AA5C 24429AF0 */  addiu     $v0, $v0, -0x6510
-/* E1160 8014AA60 00041840 */  sll       $v1, $a0, 1
-/* E1164 8014AA64 00641821 */  addu      $v1, $v1, $a0
-/* E1168 8014AA68 00031900 */  sll       $v1, $v1, 4
-/* E116C 8014AA6C 00621821 */  addu      $v1, $v1, $v0
-/* E1170 8014AA70 AFBF0010 */  sw        $ra, 0x10($sp)
-/* E1174 8014AA74 94640000 */  lhu       $a0, ($v1)
-/* E1178 8014AA78 30820001 */  andi      $v0, $a0, 1
-/* E117C 8014AA7C 10400003 */  beqz      $v0, .L8014AA8C
-/* E1180 8014AA80 30820002 */   andi     $v0, $a0, 2
-/* E1184 8014AA84 14400003 */  bnez      $v0, .L8014AA94
-/* E1188 8014AA88 00061400 */   sll      $v0, $a2, 0x10
-.L8014AA8C:
-/* E118C 8014AA8C 08052AC0 */  j         .L8014AB00
-/* E1190 8014AA90 0000102D */   daddu    $v0, $zero, $zero
-.L8014AA94:
-/* E1194 8014AA94 00022403 */  sra       $a0, $v0, 0x10
-/* E1198 8014AA98 24020001 */  addiu     $v0, $zero, 1
-/* E119C 8014AA9C 1082000F */  beq       $a0, $v0, .L8014AADC
-/* E11A0 8014AAA0 28820002 */   slti     $v0, $a0, 2
-/* E11A4 8014AAA4 10400005 */  beqz      $v0, .L8014AABC
-/* E11A8 8014AAA8 24020002 */   addiu    $v0, $zero, 2
-/* E11AC 8014AAAC 10800007 */  beqz      $a0, .L8014AACC
-/* E11B0 8014AAB0 24020001 */   addiu    $v0, $zero, 1
-/* E11B4 8014AAB4 08052AC0 */  j         .L8014AB00
-/* E11B8 8014AAB8 00000000 */   nop      
-.L8014AABC:
-/* E11BC 8014AABC 1082000C */  beq       $a0, $v0, .L8014AAF0
-/* E11C0 8014AAC0 24020001 */   addiu    $v0, $zero, 1
-/* E11C4 8014AAC4 08052AC0 */  j         .L8014AB00
-/* E11C8 8014AAC8 00000000 */   nop      
-.L8014AACC:
-/* E11CC 8014AACC 0C01580A */  jal       func_80056028
-/* E11D0 8014AAD0 8C640018 */   lw       $a0, 0x18($v1)
-/* E11D4 8014AAD4 08052AC0 */  j         .L8014AB00
-/* E11D8 8014AAD8 24020001 */   addiu    $v0, $zero, 1
-.L8014AADC:
-/* E11DC 8014AADC 8C640018 */  lw        $a0, 0x18($v1)
-/* E11E0 8014AAE0 0C015811 */  jal       func_80056044
-/* E11E4 8014AAE4 00000000 */   nop      
-/* E11E8 8014AAE8 08052AC0 */  j         .L8014AB00
-/* E11EC 8014AAEC 24020001 */   addiu    $v0, $zero, 1
-.L8014AAF0:
-/* E11F0 8014AAF0 8C640018 */  lw        $a0, 0x18($v1)
-/* E11F4 8014AAF4 0C01581A */  jal       func_80056068
-/* E11F8 8014AAF8 00000000 */   nop      
-/* E11FC 8014AAFC 24020001 */  addiu     $v0, $zero, 1
-.L8014AB00:
-/* E1200 8014AB00 8FBF0010 */  lw        $ra, 0x10($sp)
-/* E1204 8014AB04 03E00008 */  jr        $ra
-/* E1208 8014AB08 27BD0018 */   addiu    $sp, $sp, 0x18
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014AB0C.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014AB0C.s
deleted file mode 100644
index 8f8d3ba207..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014AB0C.s
+++ /dev/null
@@ -1,27 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014AB0C
-/* E120C 8014AB0C 27BDFFE8 */  addiu     $sp, $sp, -0x18
-/* E1210 8014AB10 3C028016 */  lui       $v0, 0x8016
-/* E1214 8014AB14 24429AF0 */  addiu     $v0, $v0, -0x6510
-/* E1218 8014AB18 00041840 */  sll       $v1, $a0, 1
-/* E121C 8014AB1C 00641821 */  addu      $v1, $v1, $a0
-/* E1220 8014AB20 00031900 */  sll       $v1, $v1, 4
-/* E1224 8014AB24 00621821 */  addu      $v1, $v1, $v0
-/* E1228 8014AB28 AFBF0010 */  sw        $ra, 0x10($sp)
-/* E122C 8014AB2C 94620000 */  lhu       $v0, ($v1)
-/* E1230 8014AB30 30420001 */  andi      $v0, $v0, 1
-/* E1234 8014AB34 10400006 */  beqz      $v0, .L8014AB50
-/* E1238 8014AB38 00052C00 */   sll      $a1, $a1, 0x10
-/* E123C 8014AB3C 8C640018 */  lw        $a0, 0x18($v1)
-/* E1240 8014AB40 0C015777 */  jal       func_80055DDC
-/* E1244 8014AB44 00052C03 */   sra      $a1, $a1, 0x10
-/* E1248 8014AB48 08052AD5 */  j         .L8014AB54
-/* E124C 8014AB4C 00000000 */   nop      
-.L8014AB50:
-/* E1250 8014AB50 0000102D */  daddu     $v0, $zero, $zero
-.L8014AB54:
-/* E1254 8014AB54 8FBF0010 */  lw        $ra, 0x10($sp)
-/* E1258 8014AB58 03E00008 */  jr        $ra
-/* E125C 8014AB5C 27BD0018 */   addiu    $sp, $sp, 0x18
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014AB60.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014AB60.s
deleted file mode 100644
index 46042b52a4..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014AB60.s
+++ /dev/null
@@ -1,27 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014AB60
-/* E1260 8014AB60 27BDFFE8 */  addiu     $sp, $sp, -0x18
-/* E1264 8014AB64 3C028016 */  lui       $v0, 0x8016
-/* E1268 8014AB68 24429AF0 */  addiu     $v0, $v0, -0x6510
-/* E126C 8014AB6C 00041840 */  sll       $v1, $a0, 1
-/* E1270 8014AB70 00641821 */  addu      $v1, $v1, $a0
-/* E1274 8014AB74 00031900 */  sll       $v1, $v1, 4
-/* E1278 8014AB78 00621821 */  addu      $v1, $v1, $v0
-/* E127C 8014AB7C AFBF0010 */  sw        $ra, 0x10($sp)
-/* E1280 8014AB80 94620000 */  lhu       $v0, ($v1)
-/* E1284 8014AB84 30420001 */  andi      $v0, $v0, 1
-/* E1288 8014AB88 10400006 */  beqz      $v0, .L8014ABA4
-/* E128C 8014AB8C 00052C00 */   sll      $a1, $a1, 0x10
-/* E1290 8014AB90 8C640018 */  lw        $a0, 0x18($v1)
-/* E1294 8014AB94 0C015792 */  jal       func_80055E48
-/* E1298 8014AB98 00052C03 */   sra      $a1, $a1, 0x10
-/* E129C 8014AB9C 08052AEA */  j         .L8014ABA8
-/* E12A0 8014ABA0 00000000 */   nop      
-.L8014ABA4:
-/* E12A4 8014ABA4 0000102D */  daddu     $v0, $zero, $zero
-.L8014ABA8:
-/* E12A8 8014ABA8 8FBF0010 */  lw        $ra, 0x10($sp)
-/* E12AC 8014ABAC 03E00008 */  jr        $ra
-/* E12B0 8014ABB0 27BD0018 */   addiu    $sp, $sp, 0x18
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014ABB4.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014ABB4.s
deleted file mode 100644
index 1899e95433..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014ABB4.s
+++ /dev/null
@@ -1,27 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014ABB4
-/* E12B4 8014ABB4 27BDFFE8 */  addiu     $sp, $sp, -0x18
-/* E12B8 8014ABB8 3C028016 */  lui       $v0, 0x8016
-/* E12BC 8014ABBC 24429AF0 */  addiu     $v0, $v0, -0x6510
-/* E12C0 8014ABC0 00041840 */  sll       $v1, $a0, 1
-/* E12C4 8014ABC4 00641821 */  addu      $v1, $v1, $a0
-/* E12C8 8014ABC8 00031900 */  sll       $v1, $v1, 4
-/* E12CC 8014ABCC 00621821 */  addu      $v1, $v1, $v0
-/* E12D0 8014ABD0 AFBF0010 */  sw        $ra, 0x10($sp)
-/* E12D4 8014ABD4 94620000 */  lhu       $v0, ($v1)
-/* E12D8 8014ABD8 30420001 */  andi      $v0, $v0, 1
-/* E12DC 8014ABDC 10400006 */  beqz      $v0, .L8014ABF8
-/* E12E0 8014ABE0 00052C00 */   sll      $a1, $a1, 0x10
-/* E12E4 8014ABE4 8C640018 */  lw        $a0, 0x18($v1)
-/* E12E8 8014ABE8 0C015731 */  jal       func_80055CC4
-/* E12EC 8014ABEC 00052C03 */   sra      $a1, $a1, 0x10
-/* E12F0 8014ABF0 08052AFF */  j         .L8014ABFC
-/* E12F4 8014ABF4 00000000 */   nop      
-.L8014ABF8:
-/* E12F8 8014ABF8 0000102D */  daddu     $v0, $zero, $zero
-.L8014ABFC:
-/* E12FC 8014ABFC 8FBF0010 */  lw        $ra, 0x10($sp)
-/* E1300 8014AC00 03E00008 */  jr        $ra
-/* E1304 8014AC04 27BD0018 */   addiu    $sp, $sp, 0x18
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014AC08.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014AC08.s
deleted file mode 100644
index 0b64c7e4d2..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014AC08.s
+++ /dev/null
@@ -1,25 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014AC08
-/* E1308 8014AC08 27BDFFE0 */  addiu     $sp, $sp, -0x20
-/* E130C 8014AC0C 0000202D */  daddu     $a0, $zero, $zero
-/* E1310 8014AC10 2405FFFF */  addiu     $a1, $zero, -1
-/* E1314 8014AC14 0080302D */  daddu     $a2, $a0, $zero
-/* E1318 8014AC18 240700FA */  addiu     $a3, $zero, 0xfa
-/* E131C 8014AC1C AFB00018 */  sw        $s0, 0x18($sp)
-/* E1320 8014AC20 24100008 */  addiu     $s0, $zero, 8
-/* E1324 8014AC24 AFBF001C */  sw        $ra, 0x1c($sp)
-/* E1328 8014AC28 0C052A46 */  jal       set_music_track
-/* E132C 8014AC2C AFB00010 */   sw       $s0, 0x10($sp)
-/* E1330 8014AC30 24040001 */  addiu     $a0, $zero, 1
-/* E1334 8014AC34 2405FFFF */  addiu     $a1, $zero, -1
-/* E1338 8014AC38 0000302D */  daddu     $a2, $zero, $zero
-/* E133C 8014AC3C 240700FA */  addiu     $a3, $zero, 0xfa
-/* E1340 8014AC40 0C052A46 */  jal       set_music_track
-/* E1344 8014AC44 AFB00010 */   sw       $s0, 0x10($sp)
-/* E1348 8014AC48 8FBF001C */  lw        $ra, 0x1c($sp)
-/* E134C 8014AC4C 8FB00018 */  lw        $s0, 0x18($sp)
-/* E1350 8014AC50 24020001 */  addiu     $v0, $zero, 1
-/* E1354 8014AC54 03E00008 */  jr        $ra
-/* E1358 8014AC58 27BD0020 */   addiu    $sp, $sp, 0x20
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014AC5C.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014AC5C.s
deleted file mode 100644
index 3bc632238a..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014AC5C.s
+++ /dev/null
@@ -1,9 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014AC5C
-/* E135C 8014AC5C 24020004 */  addiu     $v0, $zero, 4
-/* E1360 8014AC60 3C018016 */  lui       $at, %hi(D_80159AE4)
-/* E1364 8014AC64 A4229AE4 */  sh        $v0, %lo(D_80159AE4)($at)
-/* E1368 8014AC68 03E00008 */  jr        $ra
-/* E136C 8014AC6C 00000000 */   nop      
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014AC70.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014AC70.s
deleted file mode 100644
index 9b0abe19a3..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014AC70.s
+++ /dev/null
@@ -1,9 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014AC70
-/* E1370 8014AC70 24020008 */  addiu     $v0, $zero, 8
-/* E1374 8014AC74 3C018016 */  lui       $at, %hi(D_80159AE4)
-/* E1378 8014AC78 A4229AE4 */  sh        $v0, %lo(D_80159AE4)($at)
-/* E137C 8014AC7C 03E00008 */  jr        $ra
-/* E1380 8014AC80 00000000 */   nop      
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014AC84.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014AC84.s
deleted file mode 100644
index 8a219c2e58..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014AC84.s
+++ /dev/null
@@ -1,8 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014AC84
-/* E1384 8014AC84 3C018016 */  lui       $at, %hi(D_80159AE2)
-/* E1388 8014AC88 A4249AE2 */  sh        $a0, %lo(D_80159AE2)($at)
-/* E138C 8014AC8C 03E00008 */  jr        $ra
-/* E1390 8014AC90 00000000 */   nop      
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014AC94.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014AC94.s
index 3428a38914..f1b97ef67a 100644
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014AC94.s
+++ b/asm/nonmatchings/code_e0b30_len_b80/func_8014AC94.s
@@ -13,15 +13,15 @@ glabel func_8014AC94
 /* E13B4 8014ACB4 08052B4D */  j         .L8014AD34
 /* E13B8 8014ACB8 A4820000 */   sh       $v0, ($a0)
 .L8014ACBC:
-/* E13BC 8014ACBC 3C038016 */  lui       $v1, %hi(D_80159AE2)
-/* E13C0 8014ACC0 84639AE2 */  lh        $v1, %lo(D_80159AE2)($v1)
-/* E13C4 8014ACC4 3C028016 */  lui       $v0, %hi(D_80159AE4)
-/* E13C8 8014ACC8 84429AE4 */  lh        $v0, %lo(D_80159AE4)($v0)
-/* E13CC 8014ACCC 3C048016 */  lui       $a0, %hi(D_80159AE2)
-/* E13D0 8014ACD0 94849AE2 */  lhu       $a0, %lo(D_80159AE2)($a0)
+/* E13BC 8014ACBC 3C038016 */  lui       $v1, %hi(gMusicTargetVolume)
+/* E13C0 8014ACC0 84639AE2 */  lh        $v1, %lo(gMusicTargetVolume)($v1)
+/* E13C4 8014ACC4 3C028016 */  lui       $v0, %hi(gMusicUnkVolume2)
+/* E13C8 8014ACC8 84429AE4 */  lh        $v0, %lo(gMusicUnkVolume2)($v0)
+/* E13CC 8014ACCC 3C048016 */  lui       $a0, %hi(gMusicTargetVolume)
+/* E13D0 8014ACD0 94849AE2 */  lhu       $a0, %lo(gMusicTargetVolume)($a0)
 /* E13D4 8014ACD4 0043102A */  slt       $v0, $v0, $v1
-/* E13D8 8014ACD8 3C038016 */  lui       $v1, %hi(D_80159AE4)
-/* E13DC 8014ACDC 94639AE4 */  lhu       $v1, %lo(D_80159AE4)($v1)
+/* E13D8 8014ACD8 3C038016 */  lui       $v1, %hi(gMusicUnkVolume2)
+/* E13DC 8014ACDC 94639AE4 */  lhu       $v1, %lo(gMusicUnkVolume2)($v1)
 /* E13E0 8014ACE0 54400001 */  bnel      $v0, $zero, .L8014ACE8
 /* E13E4 8014ACE4 0060202D */   daddu    $a0, $v1, $zero
 .L8014ACE8:
@@ -41,7 +41,7 @@ glabel func_8014AC94
 /* E1418 8014AD18 3C048016 */  lui       $a0, 0x8016
 /* E141C 8014AD1C 84849AE6 */  lh        $a0, -0x651a($a0)
 /* E1420 8014AD20 0C015869 */  jal       func_800561A4
-/* E1424 8014AD24 00000000 */   nop      
+/* E1424 8014AD24 00000000 */   nop
 /* E1428 8014AD28 24020003 */  addiu     $v0, $zero, 3
 /* E142C 8014AD2C 3C018015 */  lui       $at, 0x8015
 /* E1430 8014AD30 A422F738 */  sh        $v0, -0x8c8($at)
diff --git a/asm/nonmatchings/code_e0b30_len_b80/func_8014AF8C.s b/asm/nonmatchings/code_e0b30_len_b80/func_8014AF8C.s
deleted file mode 100644
index d105d8a217..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/func_8014AF8C.s
+++ /dev/null
@@ -1,9 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel func_8014AF8C
-/* E168C 8014AF8C 3C028016 */  lui       $v0, 0x8016
-/* E1690 8014AF90 24429AF0 */  addiu     $v0, $v0, -0x6510
-/* E1694 8014AF94 AC44001C */  sw        $a0, 0x1c($v0)
-/* E1698 8014AF98 03E00008 */  jr        $ra
-/* E169C 8014AF9C AC450020 */   sw       $a1, 0x20($v0)
diff --git a/asm/nonmatchings/code_e0b30_len_b80/get_default_variation_for_song.s b/asm/nonmatchings/code_e0b30_len_b80/get_default_variation_for_song.s
deleted file mode 100644
index 4a660c6f77..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/get_default_variation_for_song.s
+++ /dev/null
@@ -1,32 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel get_default_variation_for_song
-/* E0B30 8014A430 0000302D */  daddu     $a2, $zero, $zero
-/* E0B34 8014A434 3C078009 */  lui       $a3, 0x8009
-/* E0B38 8014A438 24E734F0 */  addiu     $a3, $a3, 0x34f0
-/* E0B3C 8014A43C 3C038007 */  lui       $v1, %hi(gGameStatusPtr)
-/* E0B40 8014A440 2463419C */  addiu     $v1, $v1, %lo(gGameStatusPtr)
-/* E0B44 8014A444 3C058015 */  lui       $a1, 0x8015
-/* E0B48 8014A448 24A5F720 */  addiu     $a1, $a1, -0x8e0
-.L8014A44C:
-/* E0B4C 8014A44C 8CA20000 */  lw        $v0, ($a1)
-/* E0B50 8014A450 1444000C */  bne       $v0, $a0, .L8014A484
-/* E0B54 8014A454 24C60001 */   addiu    $a2, $a2, 1
-/* E0B58 8014A458 8C630000 */  lw        $v1, ($v1)
-/* E0B5C 8014A45C 84620086 */  lh        $v0, 0x86($v1)
-/* E0B60 8014A460 8463008C */  lh        $v1, 0x8c($v1)
-/* E0B64 8014A464 00021100 */  sll       $v0, $v0, 4
-/* E0B68 8014A468 00471021 */  addu      $v0, $v0, $a3
-/* E0B6C 8014A46C 8C420004 */  lw        $v0, 4($v0)
-/* E0B70 8014A470 00031940 */  sll       $v1, $v1, 5
-/* E0B74 8014A474 00431021 */  addu      $v0, $v0, $v1
-/* E0B78 8014A478 9042001E */  lbu       $v0, 0x1e($v0)
-/* E0B7C 8014A47C 03E00008 */  jr        $ra
-/* E0B80 8014A480 30420001 */   andi     $v0, $v0, 1
-.L8014A484:
-/* E0B84 8014A484 2CC20006 */  sltiu     $v0, $a2, 6
-/* E0B88 8014A488 1440FFF0 */  bnez      $v0, .L8014A44C
-/* E0B8C 8014A48C 24A50004 */   addiu    $a1, $a1, 4
-/* E0B90 8014A490 03E00008 */  jr        $ra
-/* E0B94 8014A494 2402FFFF */   addiu    $v0, $zero, -1
diff --git a/asm/nonmatchings/code_e0b30_len_b80/set_music_track.s b/asm/nonmatchings/code_e0b30_len_b80/set_music_track.s
deleted file mode 100644
index ec472a1a63..0000000000
--- a/asm/nonmatchings/code_e0b30_len_b80/set_music_track.s
+++ /dev/null
@@ -1,23 +0,0 @@
-.set noat      # allow manual use of $at
-.set noreorder # don't insert nops after branches
-
-glabel set_music_track
-/* E1018 8014A918 27BDFFE0 */  addiu     $sp, $sp, -0x20
-/* E101C 8014A91C 3C038016 */  lui       $v1, 0x8016
-/* E1020 8014A920 24639AF0 */  addiu     $v1, $v1, -0x6510
-/* E1024 8014A924 00041040 */  sll       $v0, $a0, 1
-/* E1028 8014A928 00441021 */  addu      $v0, $v0, $a0
-/* E102C 8014A92C 00021100 */  sll       $v0, $v0, 4
-/* E1030 8014A930 00431021 */  addu      $v0, $v0, $v1
-/* E1034 8014A934 AFBF0018 */  sw        $ra, 0x18($sp)
-/* E1038 8014A938 94430000 */  lhu       $v1, ($v0)
-/* E103C 8014A93C 8FA80030 */  lw        $t0, 0x30($sp)
-/* E1040 8014A940 3063FFF7 */  andi      $v1, $v1, 0xfff7
-/* E1044 8014A944 00084400 */  sll       $t0, $t0, 0x10
-/* E1048 8014A948 00084403 */  sra       $t0, $t0, 0x10
-/* E104C 8014A94C A4430000 */  sh        $v1, ($v0)
-/* E1050 8014A950 0C0529F8 */  jal       _set_music_track
-/* E1054 8014A954 AFA80010 */   sw       $t0, 0x10($sp)
-/* E1058 8014A958 8FBF0018 */  lw        $ra, 0x18($sp)
-/* E105C 8014A95C 03E00008 */  jr        $ra
-/* E1060 8014A960 27BD0020 */   addiu    $sp, $sp, 0x20
diff --git a/include/common_structs.h b/include/common_structs.h
index ddba0e53cd..807d692c00 100644
--- a/include/common_structs.h
+++ b/include/common_structs.h
@@ -307,14 +307,18 @@ typedef struct StaticEntityData {
 } StaticEntityData; // size = 0x24
 
 typedef struct MusicPlayer {
-    /* 0x00 */ s16 unkFlags;
-    /* 0x02 */ char unk_02[2];
+    /* 0x00 */ u16 flags;
+    /* 0x02 */ u16 unk_02;
     /* 0x04 */ s32 fadeOutTime;
     /* 0x08 */ s32 fadeInTime;
-    /* 0x0C */ char unk_0C[4];
+    /* 0x0C */ s16 unk_0C;
+    /* 0x0E */ s16 unk_0E;
     /* 0x10 */ s32 songID;
     /* 0x14 */ s32 variation;
-    /* 0x18 */ char unk_18[24];
+    /* 0x18 */ s32 unk_18;
+    /* 0x1C */ s32 unk_1C;
+    /* 0x20 */ s32 unk_20;
+    /* 0x24 */ char unk_24[12];
 } MusicPlayer; // size = 0x30
 
 typedef struct MenuIcon {
diff --git a/include/enums.h b/include/enums.h
index 8b669f3116..4669f119bf 100644
--- a/include/enums.h
+++ b/include/enums.h
@@ -260,7 +260,7 @@ typedef UNK_TYPE SpriteId;
 #define SpriteId_PARADE_TWINK          0x000000E8
 #define SpriteId_LEAF                  0x000000E9
 
-typedef UNK_TYPE Song;
+typedef s32 SongID;
 #define Song_TOAD_TOWN              0x00000000
 #define Song_NORMAL_BATTLE          0x00000002
 #define Song_SPECIAL_BATTLE         0x00000003
diff --git a/include/functions.h b/include/functions.h
index 1f3d72256e..e4afc452a8 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -117,7 +117,7 @@ f32 dist3D(f32 ax, f32 ay, f32 az, f32 bx, f32 by, f32 bz);
 void add_vec2D_polar(f32* x, f32* y, f32 r, f32 theta);
 
 s32 play_sound_at_position(s32 soundID, s32 value2, f32 posX, f32 posY, f32 posZ);
-s32 set_music_track(s32 musicPlayer, s32 songID, s32 variation, s32 unk, s32 volume);
+s32 set_music_track(s32 playerIndex, s32 songID, s32 variation, s32 fadeOutTime, s16 volume);
 
 ScriptInstance* get_script_by_index(s32 index);
 
diff --git a/include/map.h b/include/map.h
index 594850b6f6..b06d236645 100644
--- a/include/map.h
+++ b/include/map.h
@@ -13,12 +13,19 @@
 
 typedef Vec4f EntryList[];
 
+/// Fields other than main, entryList, entryCount, background, and tattle are initialised when the map loads.
 typedef struct MapConfig {
-    /* 0x00 */ char unk_00[0x10];
+    /* 0x00 */ ModelNode* modelTreeRoot;
+    /* 0x04 */ UNK_PTR collision;
+    /* 0x08 */ char unk_08[8];
     /* 0x10 */ Script* main;
     /* 0x14 */ EntryList* entryList;
     /* 0x18 */ s32 entryCount;
-    /* 0x1C */ char unk_1C[0x1C];
+    /* 0x1C */ char unk_1C[12];
+    /* 0x28 */ char** modelNameList;
+    /* 0x2C */ char** colliderNameList;
+    /* 0x30 */ char** zoneNameList;
+    /* 0x34 */ char unk_34[4];
     /* 0x38 */ BackgroundHeader* background;
     /* 0x3C */ union {
         MessageID msgID;
@@ -26,6 +33,26 @@ typedef struct MapConfig {
     } tattle;
 } MapConfig; // size = 0x40
 
+#define MAP_ID_MAX_LEN 7 ///< "xxx_yyy" excluding null terminator.
+typedef struct Map {
+    /* 0x00 */ char* id; ///< @see MAP_ID_MAX_LEN
+    /* 0x04 */ MapConfig* config;
+    /* 0x08 */ void* dmaStart;
+    /* 0x0C */ void* dmaEnd;
+    /* 0x10 */ void* dmaDest;
+    /* 0x14 */ char* bgName;
+    /* 0x18 */ s32(*init)(void);  ///< Return TRUE to skip normal asset (shape/hit/bg/tex) loading.
+    /* 0x1C */ s16 flags1;
+    /* 0x1E */ s8 flags2;
+    /* 0x1F */ s8 flags3;
+} Map; // size = 0x20
+
+typedef struct Area {
+    /* 0x00 */ s32 mapCount;
+    /* 0x04 */ Map* maps;
+    /* 0x08 */ char* id; ///< "area_xxx"
+    /* 0x0C */ char* name; ///< JP debug name.
+} Area; // size = 0x10
 typedef struct NpcAISettings {
     /* 0x00 */ f32 moveSpeed;
     /* 0x04 */ s32 moveTime;
@@ -218,4 +245,11 @@ typedef struct {
 
 Enemy* get_enemy(NpcId npcId);
 
+/// Zero-terminated.
+extern Area gAreas[];
+
+/// Lists the songs that are forced to use the variation determined by `map.flags2 & 1`.
+/// @see get_song_variation_override_for_cur_map
+extern SongID gSongsUsingVariationFlag[6];
+
 #endif
diff --git a/include/variables.h b/include/variables.h
index 1adaf1c1ef..25c160fb46 100644
--- a/include/variables.h
+++ b/include/variables.h
@@ -80,8 +80,6 @@ extern s32 D_8010CD20;
 extern s32 D_8010EF08;
 extern s32 D_8010F094; // player shadow index?
 extern s32 D_801595A0;
-extern s16 D_80159AE2;
-extern s16 D_80159AE4;
 extern BackgroundHeader gBackgroundImage;
 
 extern PrintContext* gCurrentPrintContext;
@@ -166,4 +164,11 @@ extern Bytecode* ShakeCam1;
 extern Bytecode* ShakeCamX;
 extern Bytecode* D_802D9D50;
 
+extern s16 gMusicUnkVolume;
+extern s16 gMusicUnkVolume2;
+extern s16 gMusicCurrentVolume;
+extern s16 gMusicTargetVolume;
+extern MusicPlayer gMusicPlayers[4];
+extern MusicPlayer D_8014F6F0;
+
 #endif
diff --git a/install.sh b/install.sh
index efbc4324cc..472281d052 100755
--- a/install.sh
+++ b/install.sh
@@ -4,7 +4,7 @@
 if command -v apt &> /dev/null; then
     echo "Installing packages for Ubuntu (apt)"
 
-    sudo apt install -y git python3 python3-pip build-essential binutils-mips-linux-gnu zlib1g-dev libyaml-dev || exit 1
+    sudo apt install -y git python3 python3-pip python3-setuptools build-essential binutils-mips-linux-gnu zlib1g-dev libyaml-dev || exit 1
     python3 -m pip install -U -r requirements.txt
 
     if [[ $1 == "--extra" ]]; then
@@ -25,7 +25,7 @@ if command -v pacman &> /dev/null; then
     sudo pacman -Syu || exit 1
 
     # Install dependencies
-    sudo pacman -S --noconfirm --needed git python python-pip base-devel zlib libyaml || exit 1
+    sudo pacman -S --noconfirm --needed git python python-pip python-setuptools base-devel zlib libyaml || exit 1
     python3 -m pip install -U -r requirements.txt
 
     # Install binutils if required
@@ -62,7 +62,7 @@ fi
 if command -v zypper &> /dev/null; then
     echo "Installing packages for openSUSE (zypper)"
 
-    sudo zypper -n install git python3 python3-devel python3-pip gcc gcc-c++ glibc-devel make cross-mips-binutils zlib-devel libyaml-devel
+    sudo zypper -n install git python3 python3-devel python3-pip python3-setuptools gcc gcc-c++ glibc-devel make cross-mips-binutils zlib-devel libyaml-devel
 
     # Link the openSUSE locations for binutils tools to their usual GNU locations
     sudo ln -s /usr/bin/mips-suse-linux-addr2line /usr/bin/mips-linux-gnu-addr2line
diff --git a/src/code_28910_len_5090.c b/src/code_28910_len_5090.c
index 9ea3bbb779..40274bd6f0 100644
--- a/src/code_28910_len_5090.c
+++ b/src/code_28910_len_5090.c
@@ -1,4 +1,4 @@
-#include "common.h"
+#include "code_28910_len_5090.h"
 
 INCLUDE_ASM(s32, "code_28910_len_5090", func_8004D510);
 
@@ -6,11 +6,41 @@ INCLUDE_ASM(s32, "code_28910_len_5090", func_8004D794);
 
 INCLUDE_ASM(s32, "code_28910_len_5090", func_8004D7E0);
 
-INCLUDE_ASM(s32, "code_28910_len_5090", func_8004DA0C);
+s32 func_8004DA0C(UNK_TYPE arg0) {
+    s32 ret = 0;
+
+    if (arg0 != 0) {
+        UnkStructFor8004DAA8* unknown;
+
+        do {
+            unknown = func_8004D794();
+        } while (0);
+
+        do {
+            if (unknown == NULL) {
+                ret = 2;
+            } else if (arg0 == unknown->unk_01C) {
+                func_8004DAA8(unknown);
+                ret = 0;
+            }
+        } while (0);
+    } else {
+        ret = 3;
+    }
+
+    return ret;
+}
 
 INCLUDE_ASM(s32, "code_28910_len_5090", func_8004DA74);
 
-INCLUDE_ASM(s32, "code_28910_len_5090", func_8004DAA8);
+void func_8004DAA8(UnkStructFor8004DAA8* arg0) {
+    if (arg0->unk_221 != 0) {
+        arg0->unk_221 = 4;
+        arg0->unk_010 = 1;
+        arg0->unk_008 = 1;
+        func_80053A18(&arg0->unk_02C);
+    }
+}
 
 INCLUDE_ASM(s32, "code_28910_len_5090", func_8004DAE0);
 
diff --git a/src/code_28910_len_5090.h b/src/code_28910_len_5090.h
new file mode 100644
index 0000000000..1aa5bb7712
--- /dev/null
+++ b/src/code_28910_len_5090.h
@@ -0,0 +1,22 @@
+#ifndef _CODE_28910_LEN_5090_H_
+#define _CODE_28910_LEN_5090_H_
+
+#include "common.h"
+#include "code_2e230_len_2190.h"
+
+typedef struct {
+    /* 0x000 */ char unk_000[8];
+    /* 0x008 */ s32 unk_008;
+    /* 0x00C */ char unk_00C[4];
+    /* 0x010 */ s32 unk_010;
+    /* 0x014 */ char unk_014[8];
+    /* 0x01C */ UNK_TYPE unk_01C;
+    /* 0x020 */ char unk_020[0xC];
+    /* 0x02C */ UnkStructFor80053A18 unk_02C;
+    /* 0x03C */ char unk_03C[0x1E5];
+    /* 0x221 */ u8 unk_221;
+} UnkStructFor8004DAA8; // size unknown
+
+void func_8004DAA8(UnkStructFor8004DAA8* arg0);
+
+#endif
diff --git a/src/code_2e230_len_2190.c b/src/code_2e230_len_2190.c
index 7716dc523f..d97c70f1b3 100644
--- a/src/code_2e230_len_2190.c
+++ b/src/code_2e230_len_2190.c
@@ -1,4 +1,4 @@
-#include "common.h"
+#include "code_2e230_len_2190.h"
 
 INCLUDE_ASM(s32, "code_2e230_len_2190", func_80052E30);
 
@@ -24,7 +24,11 @@ INCLUDE_ASM(s32, "code_2e230_len_2190", func_800538F8);
 
 INCLUDE_ASM(s32, "code_2e230_len_2190", func_80053974);
 
-INCLUDE_ASM(s32, "code_2e230_len_2190", func_80053A18);
+void func_80053A18(UnkStructFor80053A18* arg0) {
+    arg0->unk_0A = 0;
+    arg0->unk_04 = 0;
+    arg0->unk_0C = 0;
+}
 
 INCLUDE_ASM(s32, "code_2e230_len_2190", func_80053A28);
 
diff --git a/src/code_2e230_len_2190.h b/src/code_2e230_len_2190.h
new file mode 100644
index 0000000000..5b3dc33da0
--- /dev/null
+++ b/src/code_2e230_len_2190.h
@@ -0,0 +1,17 @@
+#ifndef _CODE_2E230_LEN_2190_H_
+#define _CODE_2E230_LEN_2190_H_
+
+#include "common.h"
+
+// Probably some libultra audio thing
+typedef struct UnkStructFor80053A18 {
+    /* 0x00 */ UNK_TYPE unk_00;
+    /* 0x04 */ s32 unk_04;
+    /* 0x08 */ char unk_08[2];
+    /* 0x0A */ u16 unk_0A;
+    /* 0x0C */ s32 unk_0C;
+} UnkStructFor80053A18; // size unknown
+
+void func_80053A18(UnkStructFor80053A18* arg0);
+
+#endif
diff --git a/src/code_303c0_len_3e10.c b/src/code_303c0_len_3e10.c
index d0fef616f3..0fb5eb1c82 100644
--- a/src/code_303c0_len_3e10.c
+++ b/src/code_303c0_len_3e10.c
@@ -1,10 +1,22 @@
 #include "common.h"
 
+// TODO: rodata
+extern s32 D_80078DB0;
+extern u16 D_80078DB4;
+
 INCLUDE_ASM(s32, "code_303c0_len_3e10", al_LoadBKHeaders);
 
-INCLUDE_ASM(s32, "code_303c0_len_3e10", func_80055050);
+#ifdef NON_MATCHING
+// Delay slot (probably needs rodata)
+void func_80055050(void) {
+    D_80078DB4 = 1;
+    D_80078DB0 = 0;
+}
+#else
+INCLUDE_ASM(void, "code_303c0_len_3e10", func_80055050, void);
+#endif
 
-INCLUDE_ASM(s32, "code_303c0_len_3e10", func_80055068);
+INCLUDE_ASM(void, "code_303c0_len_3e10", func_80055068, u32 arg0);
 
 INCLUDE_ASM(s32, "code_303c0_len_3e10", func_80055110);
 
@@ -58,7 +70,9 @@ INCLUDE_ASM(s32, "code_303c0_len_3e10", func_8005591C);
 
 INCLUDE_ASM(s32, "code_303c0_len_3e10", func_80055970);
 
-INCLUDE_ASM(s32, "code_303c0_len_3e10", func_800559C4);
+s32 func_800559C4(UNK_TYPE arg0) {
+    return func_8004DA0C(arg0);
+}
 
 INCLUDE_ASM(s32, "code_303c0_len_3e10", func_800559E0);
 
diff --git a/src/code_e0b30_len_b80.c b/src/code_e0b30_len_b80.c
index 40acc5fde5..4cf4fdfe38 100644
--- a/src/code_e0b30_len_b80.c
+++ b/src/code_e0b30_len_b80.c
@@ -1,38 +1,215 @@
 #include "common.h"
+#include "map.h"
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", get_default_variation_for_song);
+void transition_music_volume_to(s16 volume);
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014A498);
+/// If the given song ID is present in gSongsUsingVariationFlag, returns the current
+/// map's `flags2 & 1` value. Otherwise, returns -1.
+///
+/// @see gSongsUsingVariationFlag
+/// @returns -1: no override; 0: override to variation 0; 1 override to variation 1
+s32 get_song_variation_override_for_cur_map(SongID songID) {
+    u32 i = 0;
+    Area* areas = gAreas;
+    SongID* allowed = gSongsUsingVariationFlag;
+
+    for (i = 0; i < ARRAY_COUNT(gSongsUsingVariationFlag); i++) {
+        if (allowed[i] == songID) {
+            Map* map = &areas[GAME_STATUS->areaID].maps[GAME_STATUS->mapID];
+
+            return map->flags2 & 1;
+        }
+    }
+
+    return -1;
+}
+
+void func_8014A498(void) {
+    MusicPlayer* src; // TODO: remove this temp when .data section for this file (incl. D_8014F6F0) is set up
+    s32 i;
+
+    for (i = 0; i < 2; i++) {
+        MusicPlayer* musicPlayers = gMusicPlayers;
+        musicPlayers[i] = *(src = &D_8014F6F0);
+    }
+
+    gMusicTargetVolume = 8;
+    gMusicUnkVolume2 = 8;
+    gMusicCurrentVolume = 8;
+    func_800561A4(8);
+}
 
 void func_8014A52C(void) {
-    D_80159AE2 = 0x08;
-    D_80159AE4 = 0x08;
+    gMusicTargetVolume = 8;
+    gMusicUnkVolume2 = 8;
 }
 
 INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014A548);
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", _set_music_track);
+s32 _set_music_track(s32 playerIndex, SongID songID, s32 variation, s32 fadeOutTime, s16 volume) {
+    GameStatus* gameStatus = GAME_STATUS;
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", set_music_track, s32 musicPlayer, s32 songID, s32 variation, s32 unk,
-            s32 volume);
+    if (gameStatus->demoState != 0) {
+        return 1;
+    } else {
+        // TODO: these two lines likely a MUSIC_PLAYER(idx) macro
+        MusicPlayer* musicPlayers = gMusicPlayers;
+        MusicPlayer* musicPlayer = &musicPlayers[playerIndex];
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014A964);
+        if (!gameStatus->musicEnabled) {
+            func_800559C4(musicPlayer->unk_18);
+            musicPlayer->flags &= ~1;
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AA54);
+            return 1;
+        } else {
+            s32 override = get_song_variation_override_for_cur_map(songID);
+            if (override >= 0) {
+                variation = override;
+            }
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AB0C);
+            if (musicPlayer->songID == songID && musicPlayer->variation == variation) {
+                transition_music_volume_to(volume);
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AB60);
+                if (musicPlayer->flags & 4) {
+                    func_80055B80(musicPlayer->unk_18);
+                    musicPlayer->flags &= ~4;
+                }
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014ABB4);
+                return 2;
+            }
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AC08);
+            gMusicUnkVolume = volume;
+            musicPlayer->songID = songID;
+            musicPlayer->variation = variation;
+            musicPlayer->fadeOutTime = fadeOutTime;
+            musicPlayer->unk_02 = 1;
+            musicPlayer->flags &= ~2;
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AC5C);
+            return 1;
+        }
+    }
+}
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AC70);
+s32 set_music_track(s32 playerIndex, SongID songID, s32 variation, s32 fadeOutTime, s16 volume) {
+    MusicPlayer* musicPlayers = gMusicPlayers;
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AC84);
+    musicPlayers[playerIndex].flags &= ~8;
+
+    return _set_music_track(playerIndex, songID, variation, fadeOutTime, volume);
+}
+
+s32 func_8014A964(s32 playerIndex, SongID songID, s32 variation, s32 fadeInTime, s16 arg4, s16 arg5) {
+    GameStatus* gameStatus = GAME_STATUS;
+
+    if (gameStatus->demoState != 0) {
+        return 1;
+    } else {
+        MusicPlayer* musicPlayers = gMusicPlayers;
+        MusicPlayer* musicPlayer = &musicPlayers[playerIndex];
+
+        if (!gameStatus->musicEnabled) {
+            func_800559C4(musicPlayer->unk_18);
+            musicPlayer->flags &= ~1;
+
+            return 1;
+        } else {
+            s32 defaultVariation = get_song_variation_override_for_cur_map(songID);
+            if (defaultVariation >= 0) {
+                variation = defaultVariation;
+            }
+
+            musicPlayer->fadeInTime = fadeInTime;
+            musicPlayer->unk_0C = arg4;
+            musicPlayer->unk_0E = arg5;
+            musicPlayer->songID = songID;
+            musicPlayer->variation = variation;
+            musicPlayer->flags |= 0x20;
+            musicPlayer->unk_02 = 1;
+            musicPlayer->flags &= ~2;
+
+            return 1;
+        }
+    }
+}
+
+s32 func_8014AA54(s32 playerIndex, s32 arg1, s16 arg2) {
+    MusicPlayer* musicPlayers = gMusicPlayers;
+    MusicPlayer* musicPlayer = &musicPlayers[playerIndex];
+
+    if (!(musicPlayer->flags & 1)) {
+        return 0;
+    }
+
+    if (!(musicPlayer->flags & 2)) {
+        return 0;
+    }
+
+    switch (arg2) {
+        case 0:
+            func_80056028(musicPlayer->unk_18, arg1);
+            break;
+        case 1:
+            func_80056044(musicPlayer->unk_18, arg1);
+            break;
+        case 2:
+            func_80056068(musicPlayer->unk_18, arg1);
+            break;
+    }
+
+    return 1;
+}
+
+s32 func_8014AB0C(s32 playerIndex, s16 arg1) {
+    MusicPlayer* musicPlayers = gMusicPlayers;
+    MusicPlayer* musicPlayer = &musicPlayers[playerIndex];
+
+    if (!(musicPlayer->flags & 1)) {
+        return 0;
+    }
+
+    return func_80055DDC(musicPlayer->unk_18, arg1);
+}
+
+s32 func_8014AB60(s32 playerIndex, s16 arg1) {
+    MusicPlayer* musicPlayers = gMusicPlayers;
+    MusicPlayer* musicPlayer = &musicPlayers[playerIndex];
+
+    if (!(musicPlayer->flags & 1)) {
+        return 0;
+    }
+
+    return func_80055E48(musicPlayer->unk_18, arg1);
+}
+
+s32 func_8014ABB4(s32 playerIndex, s16 arg1) {
+    MusicPlayer* musicPlayers = gMusicPlayers;
+    MusicPlayer* musicPlayer = &musicPlayers[playerIndex];
+
+    if (!(musicPlayer->flags & 1)) {
+        return 0;
+    }
+
+    return func_80055CC4(musicPlayer->unk_18, arg1);
+}
+
+s32 func_8014AC08(void) {
+    set_music_track(0, -1, 0, 250, 8);
+    set_music_track(1, -1, 0, 250, 8);
+
+    return 1;
+}
+
+void func_8014AC5C(void) {
+    gMusicUnkVolume2 = 4;
+}
+
+void func_8014AC70(void) {
+    gMusicUnkVolume2 = 8;
+}
+
+void transition_music_volume_to(s16 volume) {
+    gMusicTargetVolume = volume;
+}
 
 INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AC94);
 
@@ -46,7 +223,11 @@ INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AE6C);
 
 INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AEF8);
 
-INCLUDE_ASM(s32, "code_e0b30_len_b80", func_8014AF8C);
+void func_8014AF8C(s32 arg0, s32 arg1) {
+    MusicPlayer* musicPlayer = &gMusicPlayers[0];
+    musicPlayer->unk_1C = arg0;
+    musicPlayer->unk_20 = arg1;
+}
 
 void func_8014AFA0(void) {
 }
diff --git a/tools/symbol_addrs.txt b/tools/symbol_addrs.txt
index b78c0e7827..3db8a5f395 100644
--- a/tools/symbol_addrs.txt
+++ b/tools/symbol_addrs.txt
@@ -1897,4 +1897,13 @@ gSpeakingActorPart;0x8029FA78
 EnterWalk;0x80285960
 EnemyNpcHit;0x80077F70
 EnemyNpcDefeat;0x8007809C
+D_80078DB0;0x80078DB0
+D_80078DB4;0x80078DB4
+gMusicPlayers;0x80159AF0
+gMusicUnkVolume;0x80159AE0
+gMusicUnkVolume2;0x80159AE4
+gMusicTargetVolume;0x80159AE2
+gMusicCurrentVolume;0x80159AE6
+gAreas;0x800934F0
+gSongArray;0x8014F720
 D_802D9D50;0x802D9D50
diff --git a/undefined_syms.txt b/undefined_syms.txt
index 1574ba51ba..49e502427d 100644
--- a/undefined_syms.txt
+++ b/undefined_syms.txt
@@ -179,8 +179,13 @@ gTriggerList2 = 0x80159290;
 gCurrentTriggerListPtr = 0x80159390;
 
 D_801595A0 = 0x801595A0;
-D_80159AE2 = 0x80159AE2;
-D_80159AE4 = 0x80159AE4;
+gMusicUnkVolume = 0x80159AE0;
+gMusicTargetVolume = 0x80159AE2;
+gMusicUnkVolume2 = 0x80159AE4;
+gMusicCurrentVolume = 0x80159AE6;
+gMusicPlayers = 0x80159AF0;
+D_8014F6F0 = 0x8014F6F0;
+
 gCollisionStatus = 0x8015A550;
 D_8015C7C0 = 0x8015C7C0;
 gLastCreatedEntityIndex = 0x801512EC;
@@ -262,3 +267,9 @@ ShakeCamX = 0x802D9CE8;
 
 EnemyNpcHit = 0x80077F70;
 EnemyNpcDefeat = 0x8007809C;
+
+D_80078DB0 = 0x80078DB0;
+D_80078DB4 = 0x80078DB4;
+
+gAreas = 0x800934F0;
+gSongsUsingVariationFlag = 0x8014F720;