Warren Haynes has added a pair of dates to his Jerry Garcia Symphonic Celebration tour. The Gov’t Mule/Allman Brothers Band guitarist and onetime Dead member has added shows at Pittsburgh, PA’s Heinz Hall (6/18) and Los Angeles, CA’s The Greek Theatre (8/4). His other symphony dates include stops at Lenox, MA’s Tanglewood (6/22), Philadelphia, PA’s Mann Center for Performing Arts (6/25), Vienna, VA’s Wolf Trap National Park for the Performing Arts (6/26) and San Francisco’s Davies Symphony Hall (8/1-2). Fan tickets are available here.