Each area in the game has a struct that defines the music played. Levels Inside that struct the music ID for that area is defined. Below is a list of all the Music IDs

1. 0x0: no change/no music
2. 0x1: Boss
3. 0x2: Battle
4. 0x3: Dance Long
5. 0x4: Dance Short
6. 0x5: Death/Life Lost
7. 0x6: Friends (beta)
8. 0x7: Friends 2 (beta)
9. 0x8: Friends 3 (beta)
10. 0x9: Minigame Victory
11. 0xA: Aqua Star
12. 0xB: Neo Star
13. 0xC: Rock Star
14. 0xD: Pop Star
15. 0xE: Above the Clouds
16. 0xF: Mountain Stream
17. 0x10: Shiver Star
18. 0x11: Inside the Ruins
19. 0x12: Quiet Forest
20. 0x13: Ruins
21. 0x14: Ripple Star Catacombs
22. 0x15: Factory Inspection
23. 0x16: Ripple Star
24. 0x17: Game Over
25. 0x18: Bonus
26. 0x19: Falling Fight
27. 0x1A: Rock Star Select
28. 0X1B: Pop Star Select
29. 0x1C: Aqua Star Select
30. 0x1D: Neo Star Select
31. 0x1E: Shiver Star Select
32. 0x1F: Invincible
33. 0x20: Training
34. 0x21: Talking Battle
35. 0x22: Room Gaurder
36. 0x23: Mini Game Select
37. 0x24: Ripple Star Select
38. 0x25: World Map
39. 0x26: File Select
40. 0x27: Battle Among Friends: Waddle Dee
41. 0x28: Battle Among Friends: Adeline
42. 0x29: Battle Among Friends: King Dedede
43. 0x2A: Opening
44. 0x2B: Your Quest Revealed (one of the beginning cutscenes)
45. 0x2C: What! (one of the beginning cutscenes)
46. 0x2D: I'll Go, Too (one of the beginning cutscenes)
47. 0x2E: Eek! (one of the beginning cutscenes)
48. 0x2F: Mix Me In, Too (one of the beginning cutscenes)
49. 0x30: Whoa!! (one of the beginning cutscenes)
50. 0x31: I'll Come Along With You (one of the cutscenes)
51. 0x32: Alright, On To The Next (one of the cutscenes)
52. 0x33: I'm Hungry (one of the cutscenes)
53. 0x34: Beach's Backyard (one of the cutscenes)
54. 0x35: Major Specialization (one of the cutscenes)
55. 0x36: Overnight Detective (one of the cutscenes)
56. 0x37: Final Battle
57. 0x38: Bye-Bye
58. 0x39: The End part 1 (credits?)
59. 0x3A: Nothing?
60. 0x3B: Enemy Card Index
61. 0x3C: Dark Star
62. 0x3D: Miracle Matter
63. 0x3E: Gourmet Race
64. 0x3F: The End part 2 (credits?)
65. 0x40: nothing
66. 0x41: Starts Repeating tracks. Not sure if arrangements/overflow