Justin Townes Earle William Elliot Whitmore Steeldrivers Cadillac Sky Dave Rawlings Machine Willie Watson Old Crow Medicine Show Red Clay Ramblers Chatham County Line Utah Phillips Steve Earle Gillian Welch Sturgill Simpson Gilian Welch The Averett Brothers Lucero Daniel Romano Dead Man Winter Josh Ritter David Rawlings The Steel Drivers Rubber Knife Gang Three Tall Pines John Prine Lucinda Williams The Honeycutters Harper Simon Emmylou Harris Ben Nichols Hackensaw Boys Woody Guthrie Fucked Up Zeus Willie Nelson Ryan Adams Darrell Scott A. A. Bondy Hank Williams Sr. Barna Howard Old Bear Mountain The Bellfuries Dan Tyminski John Roberts And Tony Barrand Beatfarmers Swarming Branch Tyrone Cotton Lonesome Val Rosie Flores The Coloradas