Acclaimed Brazilian pianist João Carlos Martins had not played with 10 fingers since he lost the use of his right hand in a 1995 mugging in Bulgaria.

When Guillaume Benoliel sits at the piano stool rehearsing Rachmaninoff's Italian Polka for a forthcoming concert, his feet dangle in the air.

High-speed sensors have revealed that pianists’ fingertips can shape sound color through precise movements. This long-sought proof turns artistic intuition into measurable science.