I stumbled upon this last night while flipping around the Music Choice channels on cable. What I heard was one of the most beautiful versions of "I Still Haven't Found What I'm Looking For" by U2 ever... only it was playing on the "music for infants" channel, and the artist was Rockabye Baby.
Check out their official web site - where they also make infant-friendly CDs of Ramones, Nirvana, AC/DC, and much more.