Whilst I do not myself know if there is a direct physiological thing there going on, you hit the nail right smack bang on the head. Right between the eyes, if nails had eyes.
I've always felt like it (classical, all that manufactured, shallow fecking shyte. Pop, that awful manufactured auditory pollution. Devoid of depth and little more than a commercialized receptacle for verbal defaecation. Styxdamned festering speech-toilet needs a good, hard, thorough depleted uranium flush.
That kind of music, and classical music, I.e orchestral crap, all make me feel like my skin is made of sandpaper, facing inwards, rusty sandpaper, to grate against my nervous system, as if hearing it is.....its like nails down a blackboard and actually triggers a fight or flight response (although controllable in its extent, it nevertheless really sets me on edge and makes me want to get the fuck out of dodge.)
*Lestat squeezes 'raxis*
I'm feeling sleepy, very sleepy. Not tired, just sleepy. Muscle relaxer, antiseizure med and painkillers are all conspiring to make my eyes droop and my attention payed to the videogame being played currently, wander off, and me start drifting off into a series of mental flights of fancy. If that makes sense.