I was reading an interesting internet article posted by pianist ‘Chinese Cowboy’:
“Never practice for speed because you can’t. Speed is a matter of finger control and comfort with notes. When you have excellent control of your fingers then you will have speed.”
I have always told bass students to practice music at the slowest metronome setting. Yet when I sit down and play the organ, I am invariably thinking “I don’t have much time, I better increase the tempo of these scales!”– ignoring my own advice, and at my own peril.
About two years ago Mark Wells first advised me to forget about playing fast and play technique exercises slowly, with curved fingers, and with zero tension. Finally, last week I started to do that in earnest, and it has completely changed how my hands move.