Richard Farina

a leader of the '60s counterculture folk-rock scene, he was friends with Bob Dylan. His wife, Mimi, was Joan Baez's sister, who was at that time dating Dylan. Richard died in 1966 in a motorcycle crash, which put a damper on his musical career. who knows how famous/influential he would have become otherwise...

A shocking number of influential musicians died in the '60s and '70s.

ex: Richard Farina