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Songs for Torture
After reading this wiki thing about this shepard tone auditory illusion thingy...
http://en.wikipedia.org/wiki/Shepard_tone
...it got me thinking about songs that would be good for torture purposes.
Scaler by Kris Menace is an example of a shepard tone song:
http://www.myspace.com/krismenace
On a separate note, The Kids by Lou Reed would be pretty good torture material.