apparently the composer Erik Satie (famous for his Gymnopedies) wrote a piece of music called Vexations that has, at the beginning, instructions on how best to prepare oneself to play the piece 840 times in a row. Nowhere is there any actual indication that anyone would ever want to do this, but the instructions are there just in case anyone does.
@Thaminga @Felthry a quick look at some of Satie's other compositions suggests that he was actually just one of the first musical shitposters
consider, for instance, his four-handed piano opus "three pieces in the shape of a pear", which consists of seven pieces that all have nothing to do with pears
the seven pieces are named as such:
1. A way of beginning
2. More of the same
3. Piece I
4. Piece II
5. Piece III
6. And more
7. Rehash
@Thaminga @Felthry there's also "True Flabby Preludes (for a dog)", which brings me joy