I thought about getting one of those touch pads. They seem like
  the closest thing to an instrument I've dreamed of since I was a
  kid. Setting up the sounds would be annoying, as when I write
  stuff in my head, the instruments are all over the place, and
  often they're instruments that just don't exist in reality.

  I guess the shit in my head is typically the "Epic music"
  category along with some absurdism... I don't take myself
  seriously yet I also take myself way too seriously
  simultaneously.

  I've got raps in my head too; public speaking teacher once
  called me "white rapper" (mid 90s, Gangsta rap era), as we had
  to stand up and give an impromptu speech. I hated it, but I came
  up with a rhyming thing using objects in the room and it was
  kinda fun.

  I think I would've loved growing up in a neighborhood where kids
  rapped with each other. That would've been fun. I'm also a
  child-of-the-80s and had to wait 'til Aerosmith did the RunDMC
  thing to FINALLY see a caucasian accepting rap; before that it
  was entirely forbidden fruit for whites. It's _WAY_ better now.