Scientific study of touch and tone
https://phys.org/news/2025-09-pianists-subtle-finger-movements-variations.html
Interesting. Reminds me of the master classes I attended many years ago given by Karl Ulrich Schnabel who made such claims. .
K. U. Schnabel also wrote an in-depth treatise titled "Modern Technique of the Pedal (A Piano Pedal Study). Published by Edizioni Curci. Jon Nakamatsu was one of his last pupils.
Warm Regards,
Peter Acronico, RPT
(408) 838-2559