Alphonso Johnson 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.

The Chapman Stick is an electric musical instrument devised by Emmett Chapman in the early 1970s. A member of the guitar family, the Chapman Stick usually has ten or twelve individually tuned strings and is used to play bass lines, melody lines, chords, or textures. Designed as a fully polyphonic chordal instrument, it can also cover several of these musical parts simultaneously.