The 12th annual Summer Camp Music Festival will return to Chillicothe, IL’s Three Sisters Park from May 25-27, 2012. This afternoon the fest will share a major line-up announcement but over the past few days Summer Camp has offered a taste of what will follow via Facebook and Twitter. Artists set to appear at this year’s event include: Primus, Ozomatli, Gogol Bordello, Victor Wooten, Family Groove Company, Cornmeal, Hot Buttered Rum, Brainchild, Positive Vibr8ions, DJ Solo and Chicago Farmer with a complete first round to be confirmed later today.