Cory Arcangel downloaded clips of cats ‘playing’ pianos on YouTube, and edited these clips using a code he wrote to recreate Arnold Schoenberg’s composition, widely considered the first ‘atonal’ work of music.

http://www.coryarcangel.com/things-i-made/DreiKlavierstucke

Related:

Musictypewriter – Claudia Märzendorfer John Cage John & James Whitney Earle Brown