Gorgeous. (Which part? Take your pick.)
Listen and watch Herbie Hancock and Corinne Bailey Rae do their superb performance of Joni Mitchell’s “River”.
YouTube – Herbie Hancock Feat Corinne Bailey Rae – River
Sunday night music: Herbie Hancock. Corinne Bailey Rae. Joni Mitchell’s “River”
Smart People I Know 
His hands are so gentle on the piano, almost as if he’s afraid to touch it. Most pianists are very harsh – commanding the notes to come forth; Hancock seems like he’s gently persuading the music.
good comment! It is remarkable to watch him play, for sure. Like you said!