Claim: Trevor Lawrence played baritone saxophone with the Butterfield Blues Band at the Woodstock Music Festival, held on August 15–18, 1969, and on records; then he played tenor sax, soprano sax, and baritone sax solos on Marvin Gaye's Trouble Man album.
Evidence: As a session musician, Lawrence has performed both as a studio musician and as a touring musician in the horn sections for groups including the Rolling Stones —with Steve Madaio and Bobby Keys— and with the Paul Butterfield Blues Band —along with Madaio, Dave Sanborn and Gene Dinwiddie— that performed at the Woodstock music festival in 1969. Woodstock was a music festival held August 15–18, 1969, on Max Yasgur's dairy farm in Bethel, New York, 40 miles (65 km) southwest of Woodstock. 1972: Trouble Man - Marvin Gaye He played tenor sax, soprano sax, and baritone sax solos on Marvin Gaye's Trouble Man album.