I mainly made this playlist so that I could listen to Gaster's theme while I sleep with no interruptions and without pressing play every time the song is over, although you may listen to it as well. Sleep well, my child..

Undertale OST Gaster's Theme Extended

The Mystery Man Who Speaks In Hands

UNDERTALE - ALL BOSS FIGHT SOUNDTRACKS

Undertale and glitchtale OST's

Toby Fox - UNDERTALE Soundtrack - 46 Spear Of Justice

Toby Fox - UNDERTALE Soundtrack - 36 Dummy!

Toby Fox - UNDERTALE Soundtrack - 24 Bonetrousle

Toby Fox - UNDERTALE Soundtrack - 14 Heartache

Toby Fox - UNDERTALE Soundtrack - 10 Ghost Fight

buy my albums so i can afford to upgrade my soundcloud account and enable downloads again: https://decky.bandcamp.com/

is gaster a steve reich fan?

original composition by toby fox

gaster's theme expanded [undertale]

EDITS:
11/9/15 2:27am EST (improved mix, altered bells)
11/9/15 12:21pm EST (fixed cymbals)


Art by shiki-kun-baka on DeviantArt!  http://shiki-kun-baka.deviantart.com/art/Asriel-Dreemurr-568501360

(Undertale REMIX) "Your Last Dream" ('Hopes And Dreams,' 'His Theme')

Songs used belong to Toby Fox. I mean no harm.

Megalo Strike Back

I don't know if this is the real music, but it sounds good.

Dark, Darker, Yet Darker - Gaster's Pacifist Battle Theme

Help God and also the orginal version has been removed due to the song not working
EDIT thanks for 1K plays it really nice that people like what i post
ANOTHER EDIT: holy sh*t 2k plays thats amazing!

Undertale OST - Gaster's Theme Extended

Back from an unannounced hiatus. Here's a small track. 
Audacity's reverb used to alter sound of the waves, creating a mimic of string instruments.
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Original Song: https://www.youtube.com/watch?v=AB8o_VdvFpk
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Download ORG: https://drive.google.com/open?id=0B37cw88hr9IbT0I2X3hhQ1FFX1k

Gaster's Theme (Undertale)

Undertale OST - Gaster's Theme

Sans' Theme-Megalovania Parody-Waters Of Megalovania

♋& ✋❄✏✍﻿?✌●♓⬧♒☝?☜☼

Undertale Gaster's theme

Undertale OST... - Gaster's Theme Extended

『Support me on Patreon』
www.patreon.com/tristangray

『Download』
https://tristangray.bandcamp.com/track/undertale-megalo-strike-back-epic-orchestral-suite-by-tristan-gray

『YouTube』
https://www.youtube.com/watch?v=amUlt8o9oBY&feature=youtu.be

『Artwork source』
Link to the image: http://i.imgur.com/d5OqQaZ.jpg
Link to the artist's website: http://mnstrcndy.tumblr.com/

Undertale OST... - Gaster's Theme Extended

Anonymous Gaster