Ray, Thank you so much for your comment I am not familiar with Paul Byers work but will look in to. The subject sounds intriguing. The constant beat could also be a kind of communication in utero as we know the unborn child is affected by the mothers mood. The biological rhythm is deeply rooted in our genes and I could wonder if music therapy in pregnancy could impact the genes slightly ! Thank you again for your comment, this is a subject thats needs more exploration.