The Avett Brothers

Willie Nelson , The Avett Brothers , Beck , Rosanne Cash , Charley Crockett , Sheryl Crow , Jack Johnson , Warren Haynes , Jamey Johnson , Norah Jones , Lyle Lovett , The Lumineers , Dave Matthews , Lily Meola , Lukas Nelson , Kris Kristofferson , Waylon Payne , Margo Price , Nathaniel Rateliff , Billy Strings , Bob Weir , Dwight Yoakam

Willie Nelson , The Avett Brothers , Bobby Bare , Chris Stapleton , Dave Matthews , Emmylou Harris , Eric Church , George Strait , Jack Johnson , Jamey Johnson , Jimmy Buffett , Kris Kristofferson , Lee Ann Womack , Lukas Nelson , Lyle Lovett , Margo Price , Micah Nelson , Nathaniel Rateliff , Norah Jones , The Little Willies , Ray Benson , Sheryl Crow , Steve Earle , Susan Tedeschi , Derek Trucks , Vince Gill