Hello my Russian fried. Once again, thank you for another spectacular performance - you are so incredibly talented. However, as noted by Diki, your position over the keyboard will eventually place a lot of stress on your forearms and wrists.

Many years ago, when I was very young, my piano teacher provided me with some very useful position information. Your back should be straight. your legs should be positioned as if you were sitting in a chair and when your hands are on the keys, your forearms should be parallel to the floor. For this reason, I purchased a fully adjustable stool, one primarily used by guitar players doing solo acts.



https://www.adorama.com/qlamsdx749.html?...rce=adl-gbase-p

Good Luck,

Gary