Undertale Soundtrack

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

There are 101 tracks in total on the Undertale Soundtrack, with tracks 78-101 considered "hidden" tracks. Tracks not present in normal gameplay or in the soundtrack can be found here.

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.

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	Plays	Leitmotif
1	Once Upon a Time	1:29	Introduction sequence	Once Upon a Time (All Parts)
2	Start Menu	0:32	When viewing a new SAVE file	Once Upon a Time (Part 1)
3	Your Best Friend	0:23	Protagonist's first encounter with Flowey	Flowey
4	Fallen Down	0:57	When Toriel first appears	Toriel (Fallen Down)
5	Ruins	1:32	While the protagonist travels 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 monster encounters while accompanied by Toriel Slowed down at multiple instances during the Genocide Route	Enemy Approaching
8	Unnecessary Tension	0:17	While the protagonist completes Toriel's test of their independence
9	Enemy Approaching	0:56	While fighting regular monsters (excluding Hard Mode/CORE enemies)	Enemy Approaching
10	Ghost Fight	0:56	Napstablook's fight	Ghost Fight, Enemy Approaching
11	Determination	0:50	GAME OVER screen	Determination
12	Home	2:03	In Toriel's Home	Once Upon a Time (Parts 1 and 2)
13	Home (Music Box)	2:02	In the protagonist's room in Toriel's Home when the lamp in their room is turned off	Once Upon a Time (Parts 1 and 2)
14	Heartache	1:48	Toriel's boss fight	Heartache, Enemy Approaching
15	sans.	0:50	Lighthearted interactions with Sans Music in Grillby's and Napstablook's snail farm	Snowdin Town
16	Nyeh Heh Heh!	0:32	Lighthearted interactions with Papyrus and during the fight with Papyrus before he turns the protagonist's SOUL blue	Papyrus
17	Snowy	1:44	In Snowdin Forest Distorted in the battle with Snowdrake's Mother	Snowy
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	Fighting Greater Dog, Interactions involving the Annoying Dog, Slowed down version plays after Endogeny is placated, overlapped with Woofenstein Sped up version plays after sparing Sans, Phone call for Dog Ending or Dirty Hacker Ending	Enemy Approaching
22	Snowdin Town	1:16	In Snowdin	Snowy, Snowdin Town
23	Shop	0:50	In the Snowdin Shop and Gerson's Shop	Snowy, Snowdin Town
24	Bonetrousle	0:57	During the fight with Papyrus after he turns the protagonist's SOUL blue	Papyrus
25	Dating Start!	1:56	When the befriending sequences with Papyrus, Undyne, and Alphys begin, Bratty and Catty's shop	Snowdin, Snowdin Town
26	Dating Tense!	0:26	When a befriending sequence gets intense	Undyne
27	Dating Fight!	0:35	During an intense moment during the befriending event with Papyrus	Snowdin
28	Premonition	1:01	While discussing flowers with Sans in Grillby's	You Idiot
29	Danger Mystery	0:18	First encounter with Undyne in early Waterfall
30	Undyne	0:45	While hiding from Undyne	Undyne
31	Waterfall	2:06	In Waterfall.	Waterfall, Ruins
32	Run!	0:26	While being pursued by Undyne	Undyne
33	Quiet Water	0:32	In more populated parts of Waterfall and Muffet's parlor in Hotland	Ruins
34	Memory	1:15	After placing the umbrella in the stature for the Piano Puzzle, during the memory of Asriel meeting the First Human, while Undyne talks about Asgore and Papyrus while befriending her, after sparing Asgore, after the battle with Asriel, the ending screen after the True Pacifist Ending Credits	Memory
35	Bird That Carries You Over A Disproportionately Small Gap	0:25	While a bird carries the protagonist over a disproportionately small gap.	Alphys (Part 1)
36	Dummy!	2:25	Mad Dummy's boss fight.	Ghost Fight, Enemy Approaching
37	Pathetic House	0:38	In Napstablook's house.	Ghost Fight, Enemy Approaching
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 on Napstablook's snail farm.
43	Temmie Village	0:57	In Temmie Village.	Enemy Approaching
44	Tem Shop	0:45	In the Temmie Shop.	Enemy Approaching
45	NGAHHH!!	1:22	Before fighting Undyne/while cooking with Undyne	Undyne, Ruins
46	Spear of Justice	1:55	Undyne's boss fight	Undyne, Ruins
47	Ooo	0:14	In the areas of Hotland preceding the Lab
48	Alphys	1:25	While interacting with Alphys or traversing the Lab	Alphys (Both Parts)
49	It's Showtime!	0:46	After Mettaton bursts through the wall in the Lab.	Mettaton (It's Showtime!)
50	Metal Crusher	1:03	During several encounters with Mettaton in Hotland.	Mettaton (Metal Crusher)
51	Another Medium	2:22	While traveling through Hotland	Waterfall, 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	Anticipation
54	Hotel	1:27	Mettaton's cooking show, MTT Resort	Hotel, Once Upon a Time (Parts 1 and 2)
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, Right hallway of MTT Resort	Hotel, Once Upon a Time (Parts 1 and 2)
56	Confession	0:42	When the Royal Guards confess their feelings, when Alphys and Undyne confess their feelings during the date with Alphys	Snowdin Town
57	Live Report	0:17	During Mettaton's news segment	Mettaton (It's Showtime!)
58	Death Report	0:47	During the bomb defusing sequence	Mettaton (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 special performance	Mettaton (Musical)
62	Oh! Dungeon	0:32	During the Multicolor Tile Puzzle in Hotland	Mettaton (Musical)
63	It's Raining Somewhere Else	2:50	While talking to Sans in MTT Hotel's restaurant, Sans's Workshop	Sans
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, Waterfall, Another Medium
66	Last Episode!	0:07	Before the fight against Mettaton EX	Mettaton (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 battle	CORE, Mettaton (It's Showtime! and Metal Crusher)
69	For The Fans	1:47	While Mettaton takes phone calls after his fight	Mettaton (Musical)
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 Guitar by Stephanie MacIntire.	Memory, Once Upon a Time (Parts 1 and 2)
72	Song That Might Play When You Fight Sans	1:02	Never.	Sans, Papyrus
73	The Choice	2:12	While Sans judges the protagonist, when Sans spares the protagonist, at the end of the fight with Asgore	Memory, Once Upon a Time (Part 1)
74	Small Shock	0:14	When first meeting Asgore, slowed down in New Home on a Genocide Route
75	Barrier	0:31	The area Underground viewing the barrier
76	Bergentrückung	0:21	Precedes the fight against Asgore	Bergentrückung
77	ASGORE	2:36	Asgore's boss fight	Toriel (Heartache), Undyne, Bergentrückung
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	You Idiot
79	Your Best Nightmare	4:00	Photoshop Flowey's boss fight	You Idiot, Flowey
80	Finale	1:52	During the fight against Photoshop Flowey after all human SOUL segments	Flowey, Memory
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	Ruins
82	She's Playing Piano	0:18	Outside of Undyne's house right before her date with the protagonist	Alphys (Part 2)
83	Here We Are	2:06	True Lab	Alphys (Both Parts)
84	Amalgam	1:20	When battling the Amalgamates
85	Fallen Down (Reprise)	2:30	When Toriel intervenes in the fight against Asgore in a True Pacifist Route	Toriel (Fallen Down), Once Upon a Time (All Parts)
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	First segment of Asriel Dreemurr's boss fight	Flowey, Once Upon a Time (Parts 1 and 3), Snowdin Town
88	Burn in Despair!	0:21	Second segment of Asriel Dreemurr's boss fight after "Hyper Goner" is used	You Idiot
89	SAVE the World	1:53	Second phase of Asriel Dreemurr's boss fight after the SAVE button appears	Flowey, Once Upon a Time (Parts 1 and 3)
90	His Theme	2:05	The end of Asriel Dreemurr's boss fight after memories of Chara and Asriel appear	Memory
91	Final Power	0:18	When Asriel uses the absorbed SOULs to destroy the barrier	Once Upon a Time (Part 3)
92	Reunited	4:44	In the overworld during the epilogue	Once Upon a Time (All Parts), Snowdin Town
93	Menu (Full)	0:32	On the menu screen after Asriel Dreemurr's boss fight	Once Upon a Time (Parts 1 and 3)
94	Respite	1:54	During the scene on the surface at the end of a 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, Snowy, Snowdin Town, Undyne, Ruins, CORE, Another Medium, Bergentrückung, Toriel (Fallen Down), Once Upon a Time (Part 1)
96	Last Goodbye	2:15	During the credits when all of the Kickstarter backers are being shown	Flowey, Once Upon a Time (All Parts)
97	But the Earth Refused to Die	0:34	Before Undyne the Undying's fight	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	During 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 (Part 1)

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."