The purpose of The Song That Might Play When You Fight Sans.

[perritoscastle]

Today I was was watching Undetale stuff, and one video said Gaster's Theme plays in Song That Might Play When You Fight Sans. So I checked it. It's true. So, I knew that Papyrus' theme plays inside the song too. So, I thought, Undertale takes it's hidden stuff seriously. I mean MORSE CODE, HIDDEN FILES, HACKS. And then a random song appears in the soundtrack. And its based around the most odd character in the game, and is "just a perk". I won't buy it. I belive Toby Fox knew that people would question Sans and Papyrus' relation, and put proof inside the soundtrack. And then he came up with Gaster. Then he had the hidden door and key to Sans' family hiden away. Everyone knows the door exists, but doesn't know where it goes to. This is Song That Might Play When You Fight Sans. But only a few knows where the key is. This is Gaster's Theme. If my theory is right, Song That Might Play When You Fight Sans is the proof of character relations, songs go in as clues, the title is a clue, the songs that make it are clues. sans. + Nyeh heh heh! + Gaster's theme = Song That Might Play When You Fight Sans. Those 3 songs are themes for Sans Papyrus and Gaster so Sans + Papyrus + Gaster = The whole family of skelebones. What do you guys think?

[Mother of Exiles]

//The purpose of the songis to make your desk go from brown to white.

[Hatsune Miku]

It's supposed to be a DioTrap song, as in a song that makes you think: "You expected TSTMPWYFS, but it is I, Megalovania!"