Thanks for responding to my article. I really do think that there is a difference between the hands of almost everyone, aside from the anatomical size that you correctly point out in your article. The difference really begins to manifest itself when the student is around the age of nine or ten (before that age, there is not much difference except for the anatomical size). When their hands begin to develop, many students have more meat on the ends of their fingers than other students. This means they can play more on the ends of their fingers, which is where the tone comes from, and it also allows them to play in a more relaxed manner. Those that don’t have so much “meat” on the ends of their fingers have to learn to play a little flatter, so that their fingernails don’t slide back and forth on the keys and force them to lose control. It has also been my observation that some students have more flexible joints where their thumb attaches to their hand, thus making it much easier to put their thumb behind their fingers (or under their hand, as some say) when they are doing scale-like passage work. Granted, these differences may be very subtle, but I think they can have a profound effect.