"Burn in Despair!" is the 88th track in the Undertale Soundtrack. It is a faster and more heavily action-oriented remix of "You Idiot." It plays during the first part of the second phase of the boss fight with Asriel Dreemurr at the end of a True Pacifist Route.
- This track's beat was possibly inspired by the guitar section of "Pokey Means Business!", or "Cease to Exist" in Japan from Earthbound. It could also be inspired by the song "The Oracle" from Secret of Mana. Notably, Toby Fox has referenced both games in previous songs he has worked on for Homestuck.
- The game's audio file is the shortest, though "Long Elevator" is shorter in the OST.