The original Megalovania it plays when you square off against Dr. Andonuts
Keep in mind that this is from a rom hack made by Toby Fox, and it isn’t in any of the vanilla mother games
god… what a fucking classic.
i remember when undertale first came out and megalovania was on the soundtrack and we were all like “Oh duh of course, it’s just included because it’s always in toby’s work” since. Halloween hack and homestuck.
because back then no one knew about the sans fight and it blew our goddamn collective brains when we finally got to sans like FUUUUUCKKKK HERE’S THE REMIX