Jaco Pastorius, was an American jazz musician and composer and electric bass player. His playing style was noteworthy for containing intricate solos in the higher register and for the "singing" quality he achieved on the fretless bass. Pastorius was inducted into the Down Beat Jazz Hall of Fame in 1988, one of only four bassists to be so honored (and the only electric bass guitarist). He is one of the most influential electric bass players of all time.
A friend of mine was performing with his band in Toronto years ago. This guy walks out of the audience during a break and asked him if he could play his bass. then proceeded to astound everyone. It was this guy!