Dierks Bentley will play his first Bonnaroo concert this summer, joining an eclectic lineup that includes the Police, Tool, Widespread Panic, the White Stripes, Ben Harper & the Innocent Criminals, Wilco and dozens more. The festival takes place in a field near Manchester, Tenn., on June 14-17. Other country-related artists performing at this year's Bonnaroo include Gillian Welch, Old Crow Medicine Show, Ralph Stanley & the Clinch Mountain Boys, Junior Brown and Charlie Louvin.