I like the idea for the photo, but the focus is a little bit off -- at least my eye goes immediately to his thumb, and the focus appears to be on the top of his hand.
The slight angle and the bright lighting help make this an interesting shot even though the topic is obviously not totally original. The position of fingers helps with the active 'sound' presentation, too. Kinda looks like my Casio (hey, give that back!).
This would have been more effective if you slowed the shutter speed, and got the persons hands really moving along the keyboard of the piano... it would have been nice to see some action and show the person really playing rather than just resting a hand there...