Detroit-born guitarist and producer. He was a member of Motown's famed group of session musicians, The Funk Brothers. He helped introduce a psychedelic rock sound to Motown. His guitar work can be heard on several Norman Whitfield-produced tracks for The Temptations including "Cloud Nine," "Psychedlic Shack," and "Ball of Confusion (That's What the World is Today)." In 1971, he had a smash hit as a recording artist with the Top 10 instrumental "Scorpio."