Did that with my youngest. Not in the interest of science though. Black album came out while I was pregnant and I played the hell out of it. (obsessive with music) When she was a baby, I could put the album on- LOUD and she would settle righn down, snuggle up to me and sleep. Worked like a charm. She's 14 and still carries the it in her little portable cd "to go" case.

Oh, and she is pretty well adjusted for her age so I really don't buy the Mozart crap either.