I am playing music to bubs as well.. we just have a couple of the baby soother type cd's - great for me chilling out as well.

DH and I prefer music to the telly so the radio or cd player is on all the time so bubs gets a wide varierty that way, I sing my heart out to him as well and I think he likes it! I can't sing either!

Although I was at a friends house the other day and she had Shrek 2 on and bubs was kicking up a storm to the music on that! We have just bought him a couple of the Disney Kids cd's to play to him once he arrives, we'll get Wiggles and Hi-5 as well.