Imagine, if you will, that you have someone, anyone, tied up. The position is unimportant to the concept, so long as they have minimal ability to move. They are gagged and blindfolded (again, the how is unimportant so long as it is effective). They are also wearing noise-cancelling headphones, through which you can play any music you so desire for as long as you wish, for as long as you have them restrained. What do you play?
I suppose I should also give my answer. I would probably use this little tool (http://labs.echonest.com/Uploader/index.html) to make the song last indefinitely, and blast Pink Floyd's On The Run. I'm unable to try it, as I always need to be able to listen for parents coming home early or a phone ringing when I practice self bondage, but I imagine it would be nearly, if not completely, transcendental.