I meant to post about Hieronymus Bosch’s “Butt Song” a while ago… but I’m a little behind.
A direct link to the musical realization here:
As sung:
Then if you want to get all academic about it, there’s this guy:
Jheronimus Bosch and the music of hell. Part 1/3: The modern myth of Bosch’s butt music
BONUS: Bosch’s musical instruments brought to life:

Leave a Reply