I just listened to a radio interview with the famous Oliver Sachs and he mentioned how a brain that is exposed to music actually develops differently, in a good way. They can compare 2 brain patterns (or something similar) and tell which brain has been exposed to music. He said that it is evident even in children as young as 1y. You might want to get this book. Anyway, music is a good thing! Do expose her! And as Cathy A stated, it doesn't lock her into a musical career... Good luck and don't deny her gifts! Enjoy!!!