Thievery Corporation, STS9, Cherub and Zeds Dead have joined Summer Camp’s lineup. The festival has slowly revealed their initial lineup on Facebook and Twitter during the past two days. Other acts confirmed earlier today include: The Floozies, Roster McCabe, South Side Cindy & The Slip-tones, Old Shoe and Brainchild. The artists join the likes of moe., Umphrey’s MGee, Trey Anastasio Band, Lettuce, Cornmeal, Taj Mahal, The Avett Brothers, Yonder Mountain String Band, Keller Williams, Gramatik, Family Groove Company, John Brown’s Body and Pimps of Joytime, among others. Summer Camp will return to Chillicothe, IL from May 24-26. Additional acts will be confirmed in the coming months.