Chillicothe, ILs Summer Camp festival has confirmed a handful of new acts, including O.A.R., The Roots, Lotus, U-Melt, Future Rock, Macpodz, Uglysuit and Euforquestra. As previously reported, Summer Camp will return to Three Sisters Park from May 23-25, featuring performances by moe., Umphreys McGee, the Flaming Lips, George Clinton and Parliament-Funkadelic, STS9, Tea Leaf Green and many more. As in year’s past, the gates for the Summer Camp Music Festival will open a day early for a separately ticketed pre-party. For more on O.A.R., please read our recent site interview with saxophonist Jerry DePizzo.