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Disc1
| 1 | Once Upon a Time | Toby Fox | 1:28 |
| 2 | Start Menu | Toby Fox | 0:32 |
| 3 | Your Best Friend | Toby Fox | 0:23 |
| 4 | Fallen Down | Toby Fox | 0:57 |
| 5 | Ruins | Toby Fox | 1:32 |
| 6 | Uwa‼ So Temperate ♫ | Toby Fox | 0:56 |
| 7 | Anticipation | Toby Fox | 0:22 |
| 8 | Unnecessary Tension | Toby Fox | 0:17 |
| 9 | Enemy Approaching | Toby Fox | 0:56 |
| 10 | Ghost Fight | Toby Fox | 0:56 |
| 11 | Determination | Toby Fox | 0:50 |
| 12 | Home | Toby Fox | 2:03 |
| 13 | Home (Music Box) | Toby Fox | 2:02 |
| 14 | Heartache | Toby Fox | 1:48 |
| 15 | sans. | Toby Fox | 0:50 |
| 16 | Nyeh Heh Heh! | Toby Fox | 0:32 |
| 17 | Snowy | Toby Fox | 1:44 |
| 18 | Uwa‼ So Holiday ♫ | Toby Fox | 0:30 |
| 19 | Dogbass | Toby Fox | 0:00 |
| 20 | Mysterious Place | Toby Fox | 0:44 |
| 21 | Dogsong | Toby Fox | 0:37 |
| 22 | Snowdin Town | Toby Fox | 1:16 |
| 23 | Shop | Toby Fox | 0:50 |
| 24 | Bonetrousle | Toby Fox | 0:57 |
| 25 | Dating Start! | Toby Fox | 1:56 |
| 26 | Dating Tense! | Toby Fox | 0:26 |
| 27 | Dating Fight! | Toby Fox | 0:35 |
| 28 | Premonition | Toby Fox | 1:01 |
| 29 | Danger Mystery | Toby Fox | 0:18 |
| 30 | Undyne | Toby Fox | 0:45 |
| 31 | Waterfall | Toby Fox | 2:06 |
| 32 | Run! | Toby Fox | 0:26 |
| 33 | Quiet Water | Toby Fox | 0:32 |
| 34 | Memory | Toby Fox | 1:15 |
| 35 | Bird That Carries You Over a Disproportionately Small Gap | Toby Fox | 0:25 |
| 36 | Dummy! | Toby Fox | 2:25 |
| 37 | Pathetic House | Toby Fox | 0:38 |
| 38 | Spooktune | Toby Fox | 0:23 |
| 39 | Spookwave | Toby Fox | 0:25 |
| 40 | Ghouliday | Toby Fox | 0:12 |
| 41 | Chill | Toby Fox | 0:57 |
| 42 | Thundersnail | Toby Fox | 0:42 |
| 43 | Temmie Village | Toby Fox | 0:57 |
| 44 | Tem Shop | Toby Fox | 0:45 |
| 45 | NGAHHH‼ | Toby Fox | 1:22 |
| 46 | Spear of Justice | Toby Fox | 1:55 |
| 47 | Ooo | Toby Fox | 0:14 |
| 48 | Alphys | Toby Fox | 1:25 |
| 49 | It’s Showtime! | Toby Fox | 0:46 |
| 50 | Metal Crusher | Toby Fox | 1:03 |
| 51 | Another Medium | Toby Fox | 2:22 |
| 52 | Uwa‼ So HEATS‼ ♫ | Toby Fox | 0:34 |
| 53 | Stronger Monsters | Toby Fox | 1:03 |
| 54 | Hotel | Toby Fox | 1:27 |
| 55 | Can You Really Call This a Hotel, I Didn’t Receive a Mint on My Pillow or Anything | Toby Fox | 1:01 |
| 56 | Confession | Toby Fox | 0:42 |
| 57 | Live Report | Toby Fox | 0:17 |
| 58 | Death Report | Toby Fox | 0:47 |
| 59 | Spider Dance | Toby Fox | 1:46 |
| 60 | Wrong Enemy ⁉ | Toby Fox | 0:58 |
| 61 | Oh! One True Love | Toby Fox | 1:24 |
| 62 | Oh! Dungeon | Toby Fox | 0:32 |
| 63 | It’s Raining Somewhere Else | Toby Fox | 2:50 |
| 64 | CORE Approach | Toby Fox | 0:12 |
| 65 | CORE | Toby Fox | 2:46 |
| 66 | Last Episode! | Toby Fox | 0:00 |
| 67 | Oh My… | Toby Fox | 0:14 |
| 68 | Death by Glamour | Toby Fox | 2:14 |
| 69 | For the Fans | Toby Fox | 1:47 |
| 70 | Long Elevator | Toby Fox | 0:20 |
| 71 | Undertale | Toby Fox | 6:21 |
| 72 | Song That Might Play When You Fight Sans | Toby Fox | 1:02 |
| 73 | The Choice | Toby Fox | 2:12 |
| 74 | Small Shock | Toby Fox | 0:14 |
| 75 | Barrier | Toby Fox | 0:31 |
| 76 | Bergentrückung | Toby Fox | 0:21 |
| 77 | ASGORE | Toby Fox | 2:36 |
| 78 | You Idiot | Toby Fox | 0:34 |
| 79 | Your Best Nightmare | Toby Fox | 4:00 |
| 80 | Finale | Toby Fox | 1:52 |
| 81 | An Ending | Toby Fox | 3:28 |
| 82 | She’s Playing Piano | Toby Fox | 0:18 |
| 83 | Here We Are | Toby Fox | 2:06 |
| 84 | Amalgam | Toby Fox | 1:20 |
| 85 | Fallen Down (reprise) | Toby Fox | 2:30 |
| 86 | Don’t Give Up | Toby Fox | 2:02 |
| 87 | Hopes and Dreams | Toby Fox | 3:01 |
| 88 | Burn in Despair! | Toby Fox | 0:21 |
| 89 | SAVE the World | Toby Fox | 1:53 |
| 90 | His Theme | Toby Fox | 2:05 |
| 91 | Final Power | Toby Fox | 0:18 |
| 92 | Reunited | Toby Fox | 4:44 |
| 93 | Menu (Full) | Toby Fox | 0:32 |
| 94 | Respite | Toby Fox | 1:54 |
| 95 | Bring It In, Guys! | Toby Fox | 4:12 |
| 96 | Last Goodbye | Toby Fox | 2:15 |
| 97 | But the Earth Refused to Die | Toby Fox | 0:34 |
| 98 | Battle Against a True Hero | Toby Fox | 2:36 |
| 99 | Power of “NEO” | Toby Fox | 0:30 |
| 100 | MEGALOVANIA | Toby Fox | 2:36 |
| 101 | Good Night | Toby Fox | 0:31 |