there's two more also?

Megalovania of the Empty Corse - ZUN (https://www.youtube.com/watch?v=SUn9R_9TFjM)

Necrolovania - Toby Fox (https://www.youtube.com/watch?v=fR1ifaXZ2Nk)

i gotta say, i like necrolovania a lot more. i think toby's raw composing skills aren't as good as ZUN's, but his production is better. that's why megalovania seems like it gets a bit of a downgrade here.