that is a great idea.
In her room I play the classical channel quietly at night while she sleeps. It makes for good 'white noise' to drown out the business of the house when we go to bed/wake up and she isnt disturbed.
When her and I spend time in her bedroom playing, I will turn it up and she gets this... spacey... look. Forgets what ever toy she has, what ever bug she is chasing and stands and stares.
It is like the off button I keep searching for on her back..
but never find..