For Gebo his favorites are Celtic folk music. He seems to listen intently to classical and progressive rock, but he doesn't go nuts over it.
He seems to like Irish folk music the best. Stuff with accordion, hornpipes and fiddles. The more up-tempo the better as far as he is concerned.
There is one piece in particular by The Battlefield Band, that always gets him going. In fact, the other day I was listening to a playlist in my car, and when this piece came on, I started laughing out loud since I now associate this little jig with Gebo in SPAZ MODE.
If I end up getting a video camera, this will be the first thing I capture for posterity. Just too darn funny for words!