Miles Davis’ 1960s groups produced several subsequent keyboard-playing bandleaders, with Joe Zawinul (Weather Report), Chick Corea (Return to Forever), Keith Jarrett (with his self-titled trio and as a solo artist) and Herbie Hancock (Headhunters) branching out in the early 1970s. Hancock’s initial funk-fusion lineup was short-lived but influential, with percussionist Bill Summers in on the...