Thanks Donjuan,My problem is that I have to think about "relaxation" to be relax. I have to stop all the time while I'm playing to recover this zero-status. According to you, the totally relax playing is possible ? Absolutely normal breath ?It seems difficult to imagine that a pianist breathes normally, at a personal rhythm, against the musical time and its own respirations and caesuras.Dam.
Many people or teachers tell their students to be relax! I hate when people that I am stiff, because I did not how to fix the problem and nobody could ever show me how. However, I finally met my last teacher. She was able to show me how to make my hands, arms relax. Actually, it is very easy to acquire this as long as somebody can show you. Physcal contact is required to show how to do this. In the past, I thought it was virtually impossible for me to play Revolutionary Etudes at Arrau's speed, however, after gaining the ability to make my hands relax, his speed is actually not difficult to attain.
For this you may adjust the gravitational center of the chord / key (usually keys alone are easier) in someway that when you relax all the fingers and just put the hands/arms/shoulders weight to hold the chord, no finger will come up.