I always love piano shots, not that I can play one. A few things, it seems a tad to soft and there is noticeable distortion in the whites and the black piano keys do not stand out. Possibly less light and a longer exposure would clear this up. The cropping of this is perfect, difference in tone between black keys and white is good. 7
I'm a fan of black and white especially when the subject is primarily black and white. The composure could be a little more interesting, but the contrast definately could be a little higher.