Crystal Bowersox Jennifer Nettles Tumbledown Jamestown Revival Ian Moss Jaqee The Swearengens The Maldives Juliet Simms Jasmine Rae Nick 13 Alison Kraus & Union Station Crazy Cats Allison Krauss And Union Station Old Blind Dogs Kellie Pickler Blackberry Bushes Stringband The Knitters Kris Allen Sunny Sweeney Gertrude'S Hearse Zac Brown Maggie Rose Red Molly Rascall Flats Honeyhoney Kid Creole And The Coconuts The Reckless Ones Ashley Monroe Keb Mo Kenny Wayne Shepherd Leann Rimes Melody Gardot The Last Bison The Lone Bellow The Streets Dixie Chicks Joe Bonamassa Adam Lambert Indigo Girls Darius Rucker Nevershoutnever Rod Stewart Delta Rae Alison Kraus John Prine Nickel Creek Miranda Lambert Garth Brooks