The Moving Sidewalks ft. Billy Gibbons of ZZ Top, Os Mutantes, Roky Erikson, Silver Apples and Kaleidoscope have been added to the lineup for the Austin Psych Fest. The event—which describes itself as “the epicenter of post-millennial psychedelic rock”—has also announced onsite camping for the first time ever. The festival will be held from April 26-28 at Carson Creek Ranch, a 58-acre property on the banks of Colorado River near downtown Austin. Weekend passes are currently available for $150 and camping passes can be purchased for $60. Other acts include Black Rebel Motorcycle Club, The Black Angels, Deerhunter, Tinariwen, Clinic, Warpaint, and Black Mountain, among others.