Bonetrousle

"Bonetrousle" is the 24th track in the Undertale Soundtrack. It's an extended version of "Nyeh Heh Heh!" with added drums and violin, this  after Papyrus unleashes hisblue attack.

Nova's Fandom
Plays whenever Papyrus talks

The Song
https://www.youtube.com/watch?v=mqzBv3FYpr0