Thanks for all the recommendations. I am hoping that most of these are at our library, they sound right up his alley. He will love the rhyming and silly ones. I never thought of calvin in hobbes, I think DH has some sitting around here somewhere because he loved to read them as a kid.

Yes, DS is very into music. At 2 1/2 - 3 he was really into classical. He still is, but not as obsessed as he was. He likes listening to it and playing it on his electronic piano. We aren't really all that into classical, which is interesting. He started getting into it from baby einstein. Other than that he has a bunch of CD's that he likes that we think are okay as well. For the Kids (1,2,3), sandra boynton, and all sorts of they might be giants ones (no!, here comes the abc's, here comes the 1,2,3's). He likes whatever else we listen to as well. Right now he has been listening to more babyish stuff since his DD is 16 mo, she has a few favorites that he doesn't mind listening to at times.