Al Kooper Anita O'Day Barbra Streisand Bonnie Raitt Captain Beefheart David Cassidy Glen Campbell Gordon Lightfoot Harry Nilsson James Taylor Joan Baez Joe Cocker Joni Mitchell José Feliciano Kenny Loggins Little Feat Loggins & Messina Loggins and Messina Nancy Wilson Neil Sedaka Poco Randy Newman Ray Manzarek Ringo Starr Rita Coolidge Rüfüs Ry Cooder The 5th Dimension The Doobie Brothers The Monkees