My favorite type of music to sing to would be rock and roll, Tenacious D, Led Zeppelin, some Queen - I love all of them. I love singing to them because they're all just great voices. I love listening to very obscure jazz.
Comedy is just to me, maybe it's a natural knack, if I can see where the joke is in the writing and I can see where the setup is and I can tell this is the way to make it.