Jennifer Warnes and Arlo Guthrie

John Lee Hooker, Albert Collins, Ry Cooder, Robert Cray, John Hammond, Johnnie Johnson, Booker T. Jones, Van Morrison, Keith Richards, Carlos Santana and Johnny Winter Old Crow Medicine Show, Joel Rafael, Jimmy LaFave, Donovan, Rosanne Cash, John Leventhal, Sweet Honey in the Rock, Lucinda Williams, Judy Collins, Tom Morello, Ani DiFranco, Ry Cooder, Dan Gellert, Jackson Browne, The Del McCoury Band, Tony Trischka, Tim O'Brien, John Mellencamp and Ramblin' Jack Elliott Jerry Douglas, Mumford & Sons and Paul Simon John Cruz, Jack Johnson and Jackson Browne Bonnie Raitt, Jackson Browne, Bruce Hornsby, Bryan Adams and Kim Wilson