The results are amazing... three days later, the pain in my back is practically gone (thanks to the Alexander technique), everything is clearer, the fast parts are fast, the clean parts are clean, everything is much better memorized and clearer and all the realy work has just been in my head, now Im really just using the piano to check how Im doing with the mental practice, the real breakthroughs happen in my room, in my head. The sitting at the piano is just for checking how my work actually sounds.