The Avett Brothers The Head And The Heart The Lumineers Mumford & Sons Langhorne Slim Edward Sharpe And The Magnetic Zeros Felice Brothers Dawes Gregory Alan Isakov Johnny Flynn Houndmouth Alabama Shakes Devil Makes Three The Wood Brothers Shovels And Rope Ryan Adams Wilco Dave Matthews Kings Of Leon Regina Spektor Colin Hay Mandolin Orange Thao With The Get Down Stay Down Grouplove Milk Carton Kids The Lone Bellow Langhorne Slim And The Law Motel Motel Jamestown Revival Counting Crows Ryan Adams & The Cardinals Hackensaw Boys Greensky Bluegrass Shovel And Rope Bears Den Indigo Girls Mike Doughty The Flaming Lips Jack White Spirit Family Reunion The Steel Drivers Dave Matthews And Tim Reynolds Ray Lamontagne And The Pariah Dogs The 1900s Justin Townes Earle Gillian Welch Drew Holcomb And The Neighbors Jj Grey & Mofro Old Crow Medicine Band