Soothing Babies To Sleep With Music

I've always thought of music as very soothing and great for kids. What I used to do is rock my son and listen to Bach's violin concertos. First, I used to play it just at bedtime to get him to go to sleep, then I realized that whenever he heard it he began to get drowsy. 

As he got older, one of his toys played Brahms' Lullaby so I got a tape recorder with a looped cassette that you use for answering machines and recorded his toy's lullaby so that it played long enough for him to fall asleep. I think whenever he heard those notes he started to relax and understand that it was time to go to sleep.