From Wikipedia: https://en.wikipedia.org/wiki/Leck_mich_im_Arsch

“Leck mich im Arsch (literally “Lick me in the arse”) is a canon in B-flat major composed by Wolfgang Amadeus Mozart, K. 231 (K. 382c), with lyrics in German. It was one of a set of at least six canons probably written in Vienna in 1782. Sung by six voices as a three-part round, it is thought to be a party piece for his friends.”

Later on, Jack White from the White Stripes teamed up with Insane Clown Posse to cover this classic song.  And if you must really listen to the abomination that spewed forth, here you go: http://www.youtube.com/watch?v=ZR0MUiRDrP4

Compact discs read from the inside to the outside edge which is opposite of how a record works.

Gaetano Donizetti (1797-1848) wrote one of opera’s most famous insanity scenes in Lucia di Lammermoor (1835), based on Sir Walter Scott’s novel The Bride of Lammermoor. He himself later went mad due to syphilis and spent the last years of his life in an insane asylum.