What is more important is the relative height between the seat and the top of the keys.On my grand piano, the height from the floor to the keys is 74 cm while the height of the standard bench that came with it is 49cm.So if your seat is 25cm lower than the keyboard, it doesn't matter as much how high the keyboard is as long as you can reach the damper pedal (if it has one).I hope that helps.allthumbs
I almost completely agree.I believe, as a matter of faith more than science, that there is an ideal seating position, biomechanically, to play the piano. It varies from person to person, depending on the distance from the knee to the sole of your feet at the heel, and the distance from your shoulder socket to your elbow.Your seat should be adjusted so that your knees are flexed at an angle marginally greater than 90 degrees. Your keyboard height should be adjusted so that with a comfortably upright spine, your elbow rests at an angle infinitesimally greater than 90 degrees with the upper arm just hanging from your shoulder socket, without collapse of the wrist or the knuckles and without extending your fingers, at the point where the front of the fleshy part of your finger holds the key down against the keybed.From there you can do all the jumping and Lang Langing you wish.It follows one shuld be able to adjust both the height of the chair and the height of the keybed.