acapella Dark Side of the Moon.

[BigElCat]

I found this interesting.

Pink Floyd's Dark Side of the Moon reproduced using only the human voice. The voices are electronically altered to some degree, but no instruments are used.

http://www.youtube.com/watch?v=czWJE82f_PA

 

[BigElCat]

Listen to this, and I promise you'll be laughing by the 9 minute mark!