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Undertale Soundtrack screenshot cover.png
Undertale Soundtrack screenshot Steam cover.png

UNDERTALE Soundtrack is the soundtrack album for Undertale which was released September 15, 2015. It is available for purchase from Bandcamp, Steam, iTunes, and the game's website, and available online for free on Spotify and YouTube. All tracks are composed by Toby "Radiation" Fox with FL Studio 10.[1]

There are a total of 101 tracks in the Undertale Soundtrack, with tracks 78-101 considered "hidden" tracks that are not visible before purchasing the album. There are additional tracks that are not present in normal gameplay or in the soundtrack.

The soundtrack and other sound files are largely composed of various leitmotifs. Fox has stated that the majority of Undertale's soundtrack was composed using free SoundFonts and synths.[2]

Official Track List

Note: Leitmotifs categorized as "minor" on the leitmotifs page are italicized. When applicable, the subset of a group of leitmotifs that a song is a part of is written after the parent group in parentheses.

No. Title Length Location(s) Played Leitmotif(s)
1 Once Upon a Time 1:29 Introduction sequence Once Upon a Time
2 Start Menu 0:32 Once Upon a Time
3 Your Best Friend 0:23 Your Best Friend
4 Fallen Down 0:57
  • During Toriel's introduction
  • After Toriel's test of independence
  • When Toriel leads the protagonist to her home
  • Slowed down after sparing Toriel
  • Slowed down after killing Toriel and sleeping in the bed
5 Ruins 1:32 While traveling through the Ruins Ruins
6 Uwa!! So Temperate♫ 0:56 On the Joystick Config menu during Autumn and Spring Joystick Config
7 Anticipation 0:22
  • During the encounters with Dummy and the first Froggit
  • When fighting the Glad Dummy during the Genocide Route
  • Slowed down during Monster Kid's fight in the Genocide Route
  • Slowed down when Flowey starts to fear the protagonist in New Home during the Genocide Route
  • Slowed down in the Soulless Pacifist ending
Enemy Approaching
8 Unnecessary Tension 0:17 During Toriel's test of independence
9 Enemy Approaching 0:56 While fighting regular monsters (excluding Hard Mode/CORE enemies) Enemy Approaching
10 Ghost Fight 0:56 Napstablook's boss fight Ghost Fight
11 Determination 0:50 GAME OVER screen Determination
12 Home 2:03 In Toriel's Home Once Upon a Time
13 Home (Music Box) 2:02
  • In the protagonist's room in Toriel's Home when the lamp in their room is turned off
  • Slowed down while playing Tape 1 in the True Lab
Once Upon a Time, Home
14 Heartache 1:48 Toriel's boss fight Enemy Approaching, Heartache
15 sans. 0:50 Sans
16 Nyeh Heh Heh! 0:32
  • During Papyrus's introduction
  • When Papyrus introduces his puzzles
  • During the boss fight with Papyrus before he turns the protagonist's SOUL blue
  • After sparing Papyrus
  • At the end of the hangout with Papyrus if the protagonist did not flirt with him during his battle
17 Snowy 1:44 Snowdin
18 Uwa!! So Holiday♫ 0:30 On the Joystick Config menu during Winter Joystick Config
19 Dogbass 0:06 Before fighting the Dogi Ghost Fight
20 Mysterious Place 0:44 In the secret cave in Snowdin Forest
21 Dogsong 0:37 Enemy Approaching
22 Snowdin Town 1:16 In Snowdin Snowdin
23 Shop 0:50 Snowdin
24 Bonetrousle 0:57
  • During the boss fight with Papyrus after he turns the protagonist's SOUL blue
  • Slowed down when Papyrus confronts the protagonist on the Genocide Route
25 Dating Start! 1:56 Dating Start!, Snowdin
26 Dating Tense! 0:26 When the befriending sequences with Papyrus and Alphys get tense Undyne
27 Dating Fight! 0:35 During an intense moment during the befriending event with Papyrus Dating Start!, Snowdin
28 Premonition 1:01 Your Best Nightmare
29 Danger Mystery 0:18 When seeing Undyne for the first time
30 Undyne 0:45 While hiding from Undyne during her first encounter Undyne
31 Waterfall 2:06 While traveling through Waterfall Another Medium, Ruins
32 Run! 0:26 While being pursued by Undyne Undyne
33 Quiet Water 0:32 Ruins
34 Memory 1:15 Asriel
35 Bird That Carries You Over A Disproportionately Small Gap 0:25 While the small bird carries the protagonist over a disproportionately small gap Alphys
36 Dummy! 2:25 Mad Dummy's boss fight Ghost Fight
37 Pathetic House 0:38 In Napstablook's house Ghost Fight
38 Spooktune 0:23 CD found in Napstablook's house Spooktune
39 Spookwave 0:25 CD found in Napstablook's house Spooktune
40 Ghouliday 0:12 CD found in Napstablook's house Jingle Bells
41 Chill 0:56 While lying on the ground and feeling like garbage in Napstablook's house
42 Thundersnail 0:42 During the snail race in Napstablook's snail farm
43 Temmie Village 0:57 In Temmie Village Enemy Approaching
44 Tem Shop 0:45 In the Tem Shop Enemy Approaching
45 NGAHHH!! 1:22
  • Before fighting Undyne (if Papyrus was spared)
  • While cooking with Undyne
  • Sped up when Undyne asks the protagonist if anime is real
Undyne, Ruins
46 Spear of Justice 1:55
  • Undyne's boss fight
  • Sped up during the faux battle with Undyne
Undyne, Ruins
47 Ooo 0:14
  • In the areas of Hotland preceding the Lab and the area after the Lab
  • Slowed down while playing Tape 5 in the True Lab
48 Alphys 1:25
  • During Alphys's introduction
  • While traversing the Lab after Mettaton's quiz show (not during the Genocide Route)
  • At the beginning of the date with Alphys
  • Slowed down while dating Alphys in the Garbage Dump, then gets sped up while she and the protagonist are role playing
49 It's Showtime! 0:46
  • After Mettaton bursts through the wall of the Lab
  • Before the jetpack sequence of Mettaton's cooking show
  • After the Bomb Defusal sequence of Mettaton's news report
  • Slowed down during the phone call for the Mettaton Ending
It's Showtime!
50 Metal Crusher 1:03 During battles with Mettaton Metal Crusher
51 Another Medium 2:22 While traveling through Hotland Another Medium
52 Uwa!! So HEATS!!♫ 0:34 On the Joystick Config menu during Summer Joystick Config
53 Stronger Monsters 1:03 While fighting monsters in Hard Mode Enemy Approaching
54 Hotel 1:27 Hotel, Once Upon a Time
55 Can You Really Call This A Hotel, I Didn't Receive A Mint On My Pillow Or Anything 1:01 Jetpack sequence of Mettaton's cooking show Hotel, Once Upon a Time
56 Confession 0:42
  • Slowed down when the Royal Guards confess their feelings
  • When Alphys confesses her lies and feelings towards Undyne during the date with Alphys
57 Live Report 0:17 During Mettaton's news segment It's Showtime!
58 Death Report 0:47 During the bomb defusing sequence Live Report, It's Showtime!
59 Spider Dance 1:46 Muffet's boss fight Ghost Fight
60 Wrong Enemy !? 0:58 So Sorry's boss fight
61 Oh! One True Love 1:24 During Mettaton's musical performance Oh!
62 Oh! Dungeon 0:32 During the Multicolor Tile Puzzle in Hotland Oh!
63 It's Raining Somewhere Else 2:50
  • While talking to Sans in the MTT Resort's restaurant
  • Slowed down in Sans's Workshop
64 CORE Approach 0:12 In the room between the Hotel and the CORE Hotel
65 CORE 2:46 While traveling through and fighting enemies in the CORE CORE, Another Medium
66 Last Episode! 0:07 After Mettaton betrays Alphys and declares his desire to kill the human Metal Crusher
67 Oh My... 0:14 After Mettaton's switch has been flipped, and before his silhouette disappears
68 Death by Glamour 2:14 Mettaton EX's boss fight CORE, Another Medium, Metal Crusher, It's Showtime!
69 For The Fans 1:47 While Mettaton takes phone calls after his fight Oh!
70 Long Elevator 0:20 During the first elevator ride to New Home
71 Undertale 6:21 When the protagonist travels through New Home and hears the story of Asriel and the First Human Asriel, Once Upon a Time
72 Song That Might Play When You Fight Sans 1:02 Never Sans, Papyrus
73 The Choice 2:12
  • While Sans judges the protagonist
  • Slowed down when Sans pretends to spare the protagonist
  • At the end of the fight with Asgore
Asriel, Once Upon a Time
74 Small Shock 0:14
  • When first meeting Asgore
  • Slowed down in New Home on a Genocide Route
75 Barrier 0:31 When viewing the barrier before the fight with Asgore
76 Bergentrückung 0:21 Precedes the fight against Asgore Asgore
77 ASGORE 2:36 Asgore's boss fight Asgore, Heartache, Determination, Undyne
78 You Idiot 0:34
  • Before Photoshop Flowey's fight
  • Before Asriel Dreemurr's fight
  • Before the special thanks segment of the True Pacifist Ending Credits
Your Best Nightmare
79 Your Best Nightmare 4:00 Photoshop Flowey's boss fight Your Best Friend, Your Best Nightmare
80 Finale 1:52 During the fight against Photoshop Flowey after all human SOUL segments Your Best Friend, Asriel
81 An Ending 3:28
  • During the phone calls of most Neutral Route endings
  • During the end of the battle with Undyne if the protagonist kills her
82 She's Playing Piano 0:18 Outside of Undyne's House right before her hangout with the protagonist Alphys
83 Here We Are 2:06 While exploring the True Lab Alphys
84 Amalgam 1:20 When battling the Amalgamates
85 Fallen Down (Reprise) 2:30 When Toriel intervenes in the fight against Asgore in the True Pacifist Route Toriel, Once Upon a Time
86 Don't Give Up 2:02 When monsters encourage the protagonist while Flowey ensnares them with vines Ruins
87 Hopes and Dreams 3:01 The first segment of Asriel Dreemurr's boss fight Once Upon a Time, Snowdin, Your Best Friend
88 Burn in Despair! 0:21 The second segment of Asriel Dreemurr's boss fight after "Hyper Goner" is used Your Best Nightmare
89 SAVE the World 1:53 The second phase of Asriel Dreemurr's boss fight after the SAVE button appears Once Upon a Time, Your Best Friend
90 His Theme 2:05 The end of Asriel Dreemurr's boss fight when memories of Chara and Asriel appear Asriel
91 Final Power 0:18 When Asriel uses the absorbed SOULs to destroy the barrier Once Upon a Time
92 Reunited 4:44 During the epilogue Snowdin, Once Upon a Time
93 Menu (Full) 0:32 On the menu screen after Asriel Dreemurr's boss fight before the True Reset option appears Once Upon a Time
94 Respite 1:54 During the scene on the surface at the end of the True Pacifist Route Ruins
95 Bring It In, Guys! 4:12 During the credits when all of the monsters are being shown Enemy Approaching, Papyrus, Sans, Snowdin, Undyne, Ruins, CORE, Another Medium, Asgore, Toriel, Once Upon a Time
96 Last Goodbye 2:15 During the credits when all of the Kickstarter backers are being shown Once Upon a Time, Your Best Friend
97 But the Earth Refused to Die 0:34 During Undyne's speech before becoming Undyne the Undying Ruins
98 Battle Against a True Hero 2:36 Undyne the Undying's boss fight Battle Against a True Hero, Ruins
99 Power of "NEO" 0:30 Mettaton NEO's "boss fight" Battle Against a True Hero
100 MEGALOVANIA 2:36 Sans's boss fight
101 Good Night 0:31 End of a Neutral Route in the demo, never used in the final game Once Upon a Time


The soundtrack has been widely praised by games press and fans, with Eric Van Allen of GamingTrend saying, "The soundtrack to Undertale reinforces [the game's] earth-shattering moments, knowing just when to rise and fall, and the frequent use of melodies and themes subconsciously manipulates your heart throughout the whole experience. Each song is reminiscent of a time when melodies had to be simple yet discernible, and each piece finds a way to grow outside the realm of chiptunes without losing that simplicity."[3] Jim Sterling praised the soundtrack as "a damn fine collection of unforgettable tunes."[4]


See Also


  1. "FL Studio. I often write the melodies and chords using a keyboard first."- Toby Fox. Undertale FAQ
  2. "most of undertale's music was made using free soundfonts + synths but everyone likes it. that's cool" - Toby Fox. September 19, 2015. Twitter
  3. "Underground-bound -- Undertale review" GAMING TREND.
  4. "Undertale Review – A Determined Effort – The Jimquisition" March 4, 2016.

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