A belated happy birthday to The Byrds' founder and vocalist/lead guitarist Roger McGuinn, who turned 70 (wha?!) last Friday. The Rock and Roll Hall of Fame group led the folk rock movement of the '60s, and were later pioneers in country rock and even psychedelic rock. McGuinn's electric 12-string Rickenbacker guitar was one of the unique sounds in rock music. Here The Byrds perform Carole King/Gerry Goffin's "Goin' Back" on the Smothers Brothers show, with the mustachioed McGuinn singing and on lead guitar.