I like how there's dozens of songs attributed to John Stump as Death Waltz. As far as I know, there are no recordings of Death Waltz because it's intended as a humor piece that just can't really be played. It includes instructions like "release penguins," "remove valve," and "tilt your chair back on 2 legs," and unplayable pyramids of half notes and jumbles of notation on the actual sheet music.
You can read about it here:
http://lostinthecloudblog.com/2010/03/13/john-stump-composer-of-faeries-aire-and-death-waltz/You can watch some people attempt it here:
http://www.youtube.com/watch?v=RnKFnJF7w6gIntersetingly the actual "performance" of Faerie's Aire and Death Waltz has
less than 1000 views, while all of the the pieces mistakenly attributed to him have thousands.
EDIT: If you want to hear a good piece on a piano with notespam, you can try
Circus Gallop. This piece is obviously not physically playable and actually had to be played by running two player pianos at the same time.
