You've received a lot of good comments below. I'll just add that I like this shot a lot. This takes my mind and feelings to the intricacy of music, as well as the technical aspects of it, so it makes my mind go beyond the photo and on to other things: to me a sign that it's a really good shot!
With this in mind, what makes this image work for me is the lighting and the the point of view. The lighting is moody and unscientific and helps us get to the point that music is a communication of images, perhaps, and not just scientific notes played into the air. The point of view shows us a glimpse (and "glimpse" is the right word here as your cropping is also excellent) as to how the magic of music happens.
Someone noted the brightness of the keys at lower left, and that may or may not be true. I don't think it detracts, but I think that you need the 3-D of the keys.
Beautiful shot and well executed. Creative and refreshing idea.
Overall I like this shot a lot. The only thing that seems weird to me is the placement of the fingers -- It just seems like an unnatural way of playing the piano :)