| 1. | Undertale Music: Menu (Full) | 3:45 | | Undertale
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| 2. | Undertale Music: MEGALOVANIA (Beta Mix) | 2:41 | | Undertale
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| 3. | Undertale Music: MEGALOVANIA (Original Mix) | 2:36 | | Undertale
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| 4. | Undertale Music: Death by Glamour (PC Version) | 2:16 | | Undertale
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| 5. | Undertale Music: Death by Glamour | 2:14 | | Undertale
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| 6. | Undertale: Halloween Hack Music: No More Nuzzles | 2:05 | | Undertale
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| 7. | Undertale Music: Your Best Friend (Kickstarter Demo) | 1:43 | | Undertale
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| 8. | Undertale Music: mus_toomuch | 1:40 | | Undertale
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| 9. | Undertale Music: Your Best Friend (Hard Mode) | 1:28 | | Undertale
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| 10. | Undertale Music: Shop | 1:04 | | Undertale
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| 11. | Undertale Music: Small Shock | 0:57 | | Undertale
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| 12. | Undertale Music: Start Menu (OST Mix) | 0:53 | | Undertale
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| 13. | Undertale Music: It's Showtime! | 0:46 | | Undertale
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| 14. | Undertale Music: Your Best Friend (any%) | 0:39 | | Undertale
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| 15. | Undertale Music: Menu (Full) (JP Version) | 0:33 | | Undertale
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| 16. | Undertale Music: mus_menu2 | 0:33 | | Undertale
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| 17. | Undertale Music: Nyeh Heh Heh! (Beta Mix) | 0:33 | | Undertale
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| 18. | Undertale Music: Nyeh Heh Heh! (Nintendo Switch Version) | 0:33 | | Undertale
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| 19. | Undertale Music: Start Menu | 0:32 | | Undertale
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| 20. | Undertale Music: Small Shock (Beta Mix) | 0:30 | | Undertale
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| 21. | Undertale Music: Your Best Friend (OST Version) | 0:29 | | Undertale
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| 22. | Undertale Music: Small Shock (Alpha Mix) | 0:29 | | Undertale
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| 23. | Undertale Music: Your Best Friend (Omega Mix) | 0:29 | | Undertale
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| 24. | Undertale Music: Your Best Friend (JP Version) | 0:26 | | Undertale
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| 25. | Undertale Music: Your Best Friend (Genocide Route) | 0:24 | | Undertale
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| 26. | Undertale Music: Your Best Friend (EU Version) | 0:24 | | Undertale
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| 27. | Undertale Music: Your Best Friend (CHARA Mix) | 0:24 | | Undertale
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| 28. | Undertale Music: Your Best Friend (Neutral Route) | 0:24 | | Undertale
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| 29. | Undertale Music: Your Best Friend (Alpha Ver.) | 0:24 | Let's Play | Undertale
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| 30. | Undertale Music: Your Best Friend (Beta Version) | 0:24 | | Undertale
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| 31. | Undertale Music: Your Best Friend (Alpha Version) | 0:24 | Let's Play | Undertale
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| 32. | Undertale Music: Your Best Friend | 0:23 | | Undertale
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| 33. | Undertale Music: Your Best Friend (Beta Mix) | 0:23 | | Undertale
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| 34. | Undertale Music: Your Best Friend (Alpha Mix) | 0:23 | | Undertale
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| 35. | Undertale Music: Anticipation | 0:22 | | Undertale
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| 36. | Undertale Music: Your Best Friend (Beta Test) | 0:16 | | Undertale
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| 37. | Undertale Music: Wrong Number Song | 0:14 | | Undertale
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| 38. | Undertale Music: Your Best Friend (Man's Mix) | 0:10 | | Undertale
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| 39. | Undertale Music: Your Best Friend (Short Version) | 0:04 | | Undertale
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| 40. | Undertale Music: Your Best Friend (New Game) | 0:04 | | Undertale
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