from The Mind Unleashed:
According to declassified reports, video evidence and testimony from whistleblower guards and soldiers, the US government used music to torture detainees in a number of different ways.
In some cases, songs would be played in repetition for hours or days on end, as to drive the prisoner to insanity. Music was also used to prevent detainees from sleeping, which is another way of creating delirium and vulnerability in the detainees.
Some songs were chosen because they were annoying, while others were chosen because they may have been offensive to the prisoner’s culture or religion.