I'm pretty sure that the repeated playing of Metallica tracks to break the will of Iraqi prisoners of war constitutes torture. There's something so repulsive to the human brain about a single song, looped indefinitely so that particular patterns of sound cause mental anguish, especially when lack of sleep is involved.
When I was a student, a housemate came back late one night, slightly intoxicated by alcohol. Unfortunately, the extent of her drunkenness made her put her much liked Finley Quaye CD single on repeat-play before promptly falling asleep for the night. I awoke to the wall-muffled bass lines of ‘Even After All’ caught in a hellish infinite loop of light reggae.
No-one should have to go through that.