Alphonso Johnson (born February 2, 1951) is an American jazz bassist active since the early 1970s. Johnson was a member of the jazz fusion group Weather Report from 1973 to 1975, and has performed and recorded with numerous high-profile rock and jazz acts including Santana, Phil Collins, members of the Grateful Dead, Steve Kimock, and Chet Baker.

Source: Wikipedia (https://en.wikipedia.org/wiki/Alphonso_Johnson)