Gaster's Theme - Undertale

"Gaster's Theme - Undertale" is a high quality rip of "Gaster's Theme" from Undertale.

Jokes
At 0:17, the track switches to "Fatal Blooms in Moonlight/Moonstruck Blossom" from . Initially, piano notes from the advertised track are synced up to notes from "Moonstruck Blossom" before the music switches entirely.

In the video, two messages in Wingdings (a font associated with Gaster) flash briefly at 1:06 and 2:07. They read "OR BETTER THAN KINGS... GODS﻿" and "Azukete please", which are, respectively, a quote from the introduction sequence of  and a line of lyrics from "Snow halation". The former message was also originally visible in the thumbnail before being changed to the standard Undertale thumbnail.