Joan Baez Patti Smith Mary Chapin Carpenter Nanci Griffith Janis Joplin Eva Cassidy Judy Collins Peter Mulvey Jesse Cook Crystal Gayle Mary Hopkin Emmylou Harris Peter, Paul And Mary Melanie Safka Carole King Pat Benatar Dusty Springfield The Carter Family Janis Ian Josephine Foster Velvet Underground And Nico Mercedes Sosa Anne Hills Indigo Girls Tim Buckley Emma'S Revolution Dar Williams Tracy Chapman Patty Griffin Jim Croce Roy Acuff Hank Williams Sr. Hoyt Axton Bill Staines Ralph Stanley Stevie Nicks Wallin Jennies Harry Belafonte Bob Dylan John Denver Cat Stevens Kate Rusby Jesse Winchester Gene Autry Bob Wills Les Paul Stan Rodgers Eleanor Mcevoy Gladys Knight & The Pips