heheh - I like this. I used to play irritating droning sounds
   with my synthesizers with my headphones on when I was a kid.
   Used to make sounds like that with my Tandy Radio Shack Color
   Computer with "Orchestra-90CC" cartridge. They make your
   eardrums clog up and that "cracking" sound like you're in an
   airplane. Probably the resonance frequency of the eardrum or
   something. But if its a gateway drug to Pink Floyd or Yes or
   Philip Glass, then by all means - i-dose at will. But not too
   loud 'cause permanent tinninitus is annoying! "