Here’s a creepy little number for your Halloween listening pleasure: Erik Satie’s Vexations. It’s a little two line piece of music, but the composer makes this important note at the end:

“In order to play the theme 840 times in succession, it would be advisable to prepare oneself beforehand, and in the deepest silence, by serious immobilities”

That’s right, the performer is supposed to repeat this short piece 840 times in a row – what a nightmare!!