UNDERTALE Soundtrack

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

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 contain many leitmotifs. Fox has stated that the majority of Undertale's soundtrack was composed using free SoundFonts and synths.

Official track list

No.	Title	Length	Location(s) Played	Leitmotifs	Listen
1	Once Upon a Time	1:20 (game file) 1:28 (OST) 1:29 (Complete OST) 1:27 (Demo OST)	Introduction sequence Pre-Omega Flowey battle	Once Upon a Time	Link
2	Start Menu	0:32 (game file, OST, Complete OST) 1:36 (Demo OST)	Main Menu	Once Upon a Time	Link
3	Your Best Friend	0:23 (game file, OST, Complete OST) 0:46 (Demo OST)	The first time the protagonist meets Flowey	Flowey	Link
4	Fallen Down	0:36 (game file) 0:57 (OST) 0:58 (Complete OST) 1:24 (Demo OST)	Areas in the Ruins when Toriel is interacting with the protagonist	Toriel	Link
5	Ruins	1:31 (game file) 1:32 (OST, Complete OST) 3:03 (Demo OST)	Inside the Ruins	Ruins	Link
6	Uwa!! So Temperate♫	0:54 (game file) 0:56 (OST) 0:57 (Complete OST)	Settings menu in March, April, May, September, October, or November	Uwa!! So	Link
7	Anticipation	0:10 (game file) 0:22 (OST, Complete OST) 0:20 (Demo OST)	Dummy and first Froggit battles Glad Dummy and Monster Kid battles (Genocide Route) New Home (Genocide Route) "The End" screen (Post-Genocide True Pacifist Route) Genocide ending (demo) Room bullettest Froggit battle	Enemy Approaching	Link
8	Unnecessary Tension	0:06 (game file) 0:17 (OST, Complete OST) 0:13 (Demo OST)	Toriel's independence test in the Ruins		Link
9	Enemy Approaching	0:55 (game file) 0:56 (OST, Complete OST) 1:50 (Demo OST)	Monster battles	Enemy Approaching	Link
10	Ghost Fight	0:51 (game file) 0:56 (OST) 0:57 (Complete OST) 1:42 (Demo OST)	Fight with Napstablook	Ghost Fight	Link
11	Determination	0:50 (OST, Complete OST) 0:46 (game file, Demo OST)	Game Over screen room_overworld	Determination	Link
12	Home	2:03	Toriel's Home	Once Upon a Time, Home	Link
13	Home (Music Box)	2:02 (OST) 2:03 (game file, Demo OST, Complete OST)	Asriel's room True Lab	Once Upon a Time, Home	Link
14	Heartache	1:48 (game file, OST, Complete OST) 3:36 (Demo OST)	Battle against Toriel	Enemy Approaching, Heartache	Link
15	sans.	0:22 (game file) 0:50 (OST) 0:51 (Complete OST)	Sans's introduction Sans's sentry stations in Waterfall and Hotland Grillby's Napstablook's snail farm Papyrus and Sans's house	Sans	Link
16	Nyeh Heh Heh!	0:32	Encountering Papyrus for the first time Conversations during Papyrus's puzzles During Papyrus's battle before his blue attack At the end of Papyrus's hangout (if he was not flirted with)	Papyrus	Link
17	Snowy	1:42 (game file) 1:44 (OST, Complete OST)	Snowdin During the battle against Snowdrake's mother (distorted)	Snowdin	Link
18	Uwa!! So Holiday♫	0:13 (game file) 0:30 (OST, Complete OST)	Settings menu in December, January, or February	Uwa!! So	Link
19	Dogbass	0:06 (OST) 0:07 (game file, Complete OST)	Encountering Dogamy and Dogaressa for the first time in Snowdin		Link
20	Mysterious Place	0:42 (game file) 0:44 (OST) 0:45 (Complete OST)	Mysterious door		Link
21	Dogsong	0:36 (game file) 0:37 (OST, Complete OST)	Greater Dog battle Artifact room Game Over screen after sparing Sans Endogeny battle "Dirty Hacker" ending Annoying Dog ending The end of Hard Mode Dog Shrine	Enemy Approaching	Link
22	Snowdin Town	1:15 (game file) 1:16 (OST, Complete OST)	Snowdin Town	Snowdin	Link
23	Shop	0:49 (game file) 0:50 (OST, Complete OST)	Shops (excluding Tem Shop and Bratty and Catty)	Snowdin	Link
24	Bonetrousle	0:57 (game file, OST) 0:58 (Complete OST)	Battle against Papyrus Before the encounter with Papyrus on the Genocide Route	Papyrus	Link
25	Dating Start!	1:56 (game file, OST) 1:57 (Complete OST)	At the beginning of every befriending event Bratty and Catty's shop	Snowdin	Link
26	Dating Tense!	0:25 (game file) 0:26 (OST, Complete OST)	Tense moments when befriending and dating Papyrus and Alphys	Undyne	Link
27	Dating Fight!	0:34 (game file) 0:35 (OST) 0:36 (Complete OST)	Final Part of the date or "hang out" with Papyrus	Snowdin	Link
28	Premonition	0:16 (game file) 1:01 (OST) 1:02 (Complete OST)	Hanging out with Sans at Grillby's room_water_redacted		Link
29	Danger Mystery	0:13 (game file) 0:18 (OST, Complete OST)	When Papyrus talks to Undyne in Waterfall room_meetundyne_old		Link
30	Undyne	0:37 (game file) 0:45 (OST) 0:46 (Complete OST)	First encounter with Undyne room_meetundyne_old	Undyne	Link
31	Waterfall	2:03 (game file) 2:06 (OST) 2:07 (Complete OST)	Waterfall room_meetundyne_old	Ruins, Another Medium	Link
32	Run!	0:23 (game file) 0:26 (OST) 0:27 (Complete OST)	Fleeing from Undyne	Undyne	Link
33	Quiet Water	0:26 (game file) 0:32 (OST, Complete OST)	Waterfall Muffet's Spider Bake Sale	Ruins	Link
34	Memory	1:12 (game file) 1:15 (OST, Complete OST)	Waterfall Hangout with Undyne After sparing Asgore After Saving Asriel End of True Pacifist ending credits	Asriel	Link
35	Bird That Carries You Over A Disproportionately Small Gap	0:25	When the small bird carries the protagonist over a disproportionately small gap	Alphys	Link
36	Dummy!	2:25 (game file, OST) 2:26 (Complete OST)	Battle against Mad Dummy	Ghost Fight	Link
37	Pathetic House	0:38 (game file, OST) 0:39 (Complete OST)	Napstablook's house	Ghost Fight	Link
38	Spooktune	0:23 (game file, OST) 0:24 (Complete OST)	Napstablook's house	Spooktune	Link
39	Spookwave	0:23 (game file) 0:25 (OST, Complete OST)	Napstablook's house	Spooktune	Link
40	Ghouliday	0:11 (game file) 0:12 (OST) 0:13 (Complete OST)	Napstablook's house		Link
41	Chill	0:42 (game file) 0:56 (OST, Complete OST)	Napstablook's house		Link
42	Thundersnail	0:41 (game file) 0:42 (OST, Complete OST)	When playing Thundersnail		Link
43	Temmie Village	0:57 (game file, OST) 0:58 (Complete OST)	Temmie Village	Enemy Approaching	Link
44	Tem Shop	0:40 (game file) 0:45 (OST, Complete OST)	Tem Shop	Enemy Approaching	Link
45	NGAHHH!!	1:20 (game file) 1:22 (OST) 1:23 (Complete OST)	Before fight with Undyne (if Papyrus is alive, Neutral Route) Undyne's cooking lessons Alphys date (sped up)	Ruins, Undyne	Link
46	Spear of Justice	1:53 (game file) 1:55 (OST, Complete OST)	Battles against Undyne	Ruins, Undyne	Link
47	Ooo	0:13 (game file) 0:14 (OST, Complete OST)	Hotland		Link
48	Alphys	1:24 (game file) 1:25 (OST, Complete OST)	Encountering Alphys for the first time During Alphys's date When Undyne arrives at the garbage dump during the date	Alphys	Link
49	It's Showtime!	0:45 (game file) 0:46 (OST, Complete OST)	Mettaton's Game Shows Mettaton Ending	It's Showtime!, Hotel	Link
50	Metal Crusher	1:02 (game file) 1:03 (OST, Complete OST)	Fight against Mettaton	It's Showtime!, Metal Crusher	Link
51	Another Medium	2:22	Hotland room_fire4	Another Medium	Link
52	Uwa!! So HEATS!!♫	0:33 (OST) 0:34 (game file, Complete OST)	Settings menu in June, July, or August	Uwa!! So	Link
53	Stronger Monsters	1:01 (game file) 1:03 (OST, Complete OST)	Hard Mode encounters		Link
54	Hotel	1:22 (game file) 1:27 (OST) 1:28 (Complete OST)	Cooking With A Killer Robot MTT Resort	Once Upon a Time, Hotel	Link
55	Can You Really Call This A Hotel, I Didn't Receive A Mint On My Pillow Or Anything	1:00 (game file) 1:01 (OST, Complete OST)	Cooking with a Killer Robot	Once Upon a Time, Hotel	Link
56	Confession	0:19 (game file) 0:42 (OST, Complete OST)	Royal Guards confession Alphys confession	Snowdin	Link
57	Live Report	0:15 (game file) 0:17 (OST) 0:18 (Complete OST)	News Report	It's Showtime!	Link
58	Death Report	0:45 (game file) 0:47 (OST, Complete OST)	News Report	It's Showtime!	Link
59	Spider Dance	1:40 (game file) 1:46 (OST, Complete OST)	Battle against Muffet	Ghost Fight	Link
60	Wrong Enemy !?	0:57 (game file) 0:58 (OST) 1:46 (Complete OST)	When fighting So Sorry		Link
61	Oh! One True Love	1:14 (game files) 1:24 (OST, Complete OST)	Near the end of Hotland, during Mettaton's mock opera	Oh!	Link
62	Oh! Dungeon	0:32 (game file, OST) 0:33 (Complete OST)	Dungeon right before the MTT Resort	Oh!	Link
63	It's Raining Somewhere Else	2:50	Dining with Sans in the MTT Resort restaurant Sans's workshop	Sans	Link
64	CORE Approach	0:11 (game file) 0:12 (OST, Complete OST)	Bridge between the MTT Resort and the CORE	Hotel	Link
65	CORE	2:44 (game file) 2:46 (OST, Complete OST)	CORE	Another Medium	Link
66	Last Episode!	0:07 (game file, OST) 0:08 (Complete OST)	Before the battle against Mettaton in the CORE	Metal Crusher	Link
67	Oh My...	0:16 (game file) 0:14 (OST, Complete OST)	When Mettaton's switch has been flipped		Link
68	Death by Glamour	2:12 (game file) 2:14 (OST) 2:15 (Complete OST)	Battle against Mettaton EX	Another Medium, It's Showtime!, Metal Crusher	Link
69	For the Fans	1:44 (game file) 1:47 (OST, Complete OST)	Phone call segment in the battle against Mettaton EX	Oh!	Link
70	Long Elevator	0:18 (game file) 0:20 (OST, Complete OST)	The elevator to New Home		Link
71	Undertale	6:00 (game file) 6:21 (OST) 6:22 (Complete OST)	Asgore's Home and New Home	Once Upon a Time, Asriel	Link
72	Song That Might Play When You Fight Sans	1:02	Unused	Sans, Papyrus	Link
73	The Choice	2:11 (game file) 2:12 (OST) 2:13 (Complete OST)	Last Corridor When Sans 'spares' the protagonist When given the choice to spare Asgore	Once Upon a Time, Asriel	Link
74	Small Shock	0:14	Encountering Asgore Traversing New Home with Flowey on the Genocide Route		Link
75	Barrier	0:28 (game file) 0:31 (OST) 0:14 (Complete OST)	The barrier		Link
76	Bergentrückung	0:17 (game file) 0:21 (OST, Complete OST)	Before the battle against Asgore	Asgore	Link
77	ASGORE	2:34 (game file) 2:36 (OST, Complete OST)	Battle against Asgore	Determination, Undyne, Asgore, Heartache	Link
78	You Idiot	0:29 (game file) 0:34 (OST) 0:35 (Complete OST)	Before the battle against Flowey Before the Special Thanks section Before the Asriel fight	Your Best Nightmare
79	Your Best Nightmare	4:00	The first phase of the battle against Omega Flowey	Flowey, Your Best Nightmare
80	Finale	2:02 (game file) 1:52 (OST, Complete OST)	Second phase of the battle against Omega Flowey	Flowey, Asriel
81	An Ending	3:28 (game file, OST) 3:29 (Complete OST)	After the Neutral Route's credits After killing Undyne on the Neutral Route	Ruins
82	She's Playing Piano	0:08 (game file) 0:18 (OST) 0:19 (Complete OST)	Undyne's house, before befriending her	Alphys
83	Here We Are	2:04 (game file) 2:06 (OST, Complete OST)	True Lab	Alphys
84	Amalgam	1:20	Battles against Amalgamates (excluding Endogeny and Snowdrake's mother)
85	Fallen Down (Reprise)	2:30 (game file, OST) 2:31 (Complete OST)	Barrier (True Pacifist Route)	Once Upon a Time, Toriel
86	Don't Give Up	2:00 (game file) 2:02 (OST, Complete OST)	While the protagonist is being encouraged by all of the monsters of the underground before their battle with Asriel	Ruins
87	Hopes and Dreams	2:50 (game file) 3:01 (OST, Complete OST)	During the first phase of the fight with Asriel	Once Upon a Time, Flowey, Snowdin
88	Burn in Despair!	0:14 (game file) 0:21 (OST, Complete OST)	Second phase of Asriel's fight	Your Best Nightmare
89	SAVE the World	1:46 (game file) 1:53 (OST, Complete OST)	Asriel fight, while saving the Lost Souls	Once Upon a Time, Flowey
90	His Theme	1:51 (game file) 2:05 (OST, Complete OST)	Saving Asriel	Asriel
91	Final Power	0:17 (game file) 0:18 (OST) 0:19 (Complete OST)	When Asriel breaks the barrier	Once Upon a Time
92	Reunited	4:42 (game file) 4:44 (OST, Complete OST)	All locations in epilogue except Papyrus's room, the dog room, and room_mysteryman	Once Upon a Time, Snowdin
93	Menu (Full)	0:32	Main Menu screen before leaving the underground	Once Upon a Time
94	Respite	1:41 (game file) 1:54 (OST, Complete OST)	Surface	Ruins
95	Bring It In, Guys!	4:11 (game file) 4:12 (OST, Complete OST)	During the True Pacifist ending credits	Once Upon a Time, Toriel, Ruins, Enemy Approaching, Sans, Papyrus, Snowdin, Undyne, Another Medium, Asgore
96	Last Goodbye	2:15	During the True Pacifist ending credits	Once Upon a Time, Flowey
97	But the Earth Refused to Die	0:13 (game file) 0:34 (OST, Complete OST)	Before Undyne transforms into Undyne the Undying	Ruins
98	Battle Against a True Hero	2:33 (game file) 2:36 (OST) 2:37 (Complete OST)	Battle against Undyne the Undying	Ruins, Battle Against a True Hero
99	Power of "NEO"	0:26 (game file) 0:30 (OST) 0:31 (Complete OST)	Battle with Mettaton NEO	Battle Against a True Hero
100	MEGALOVANIA	2:36	Battle against Sans	MEGALOVANIA
101	Good Night	0:25 (game file) 0:32 (Demo OST, OST) 0:31 (Complete OST)	Neutral Route Ending Screen (Demo Only)	Once Upon a Time	Link

Reception

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." Jim Sterling praised the soundtrack as "a damn fine collection of unforgettable tunes".

Trivia

• There are twelve tracks in total that are used in a diegetic context, being Memory, Spooktune, Spookwave, Ghouliday, Ooo, Oh! One True Love, Oh! Dungeon, Spider Dance, Long Elevator, Barrier, Your Best Nightmare, and She's Playing Piano.
• Song That Might Play When You Fight Sans and Good Night are the only songs that do not play in-game.
• Toby Fox has explicitly allowed content creators to dispute copyright claims regarding use of Undertale's soundtrack in videos.

See also

• Unlisted music tracks
• Unused music tracks
• Undertale Demo OST
• Undertale Complete OST