Heartache

"Heartache" is the 14th track in the Undertale Soundtrack. It plays during the fight against Toriel.

Trivia

 * According to an interview with Toby Fox, this was one of the six songs originally composed for other projects. The other five were Fallen Down, Nyeh Heh Heh!, Bonetrousle, Another Medium, and MEGALOVANIA.
 * Heartache, Nyeh Heh Heh!, and Bonetrousle were initially made for another RPG idea that never came to fruition.