It’s ROO Time; Billy Joel, Deadmau5 and Mumford & Sons headline Bonnaroo. This year’s Bonnaroo is sure to make a splash in the festival industry, with notable artists Kendrick Lamar, Tove Lo, Run the Jewels, Alabama Shakes, Royal Blood and more joining the headliners. Bonnaroo occurs this summer, June 11-14 at Great Stage Park in Manchester, Tennessee, and tickets go on sale this Saturday, January 17. See the full lineup below: