I'm posting an interesting article on newborns and rhythm. I'm thinking that the babies have learned to listen to the beat of their mom's heart in the womb. It would be interesting to test premature newborn babies and see if they have a sense of rhythm as well...of course, it would be hard to find subjects since medical staff have other concerns much greater with these babies!
Do newborn infants have a sense of rhythm? | Psychology Today
I'm also thinking it would be interesting to find out if a baby didn't test well for a sense of rhythm would it correlate to a future auditory processing or motor planning problem in later childhood...hmmm, food for thought!