Buzzfest XXXI feat. Stone Temple Pilots, Chevelle, Cage the Elephant, 10 Years Cynthia Woods Mitchell Pavilion November 2, 2013 Three songs into Stone Temple Pilots’ headlining performance at Buzzfest XXXI Saturday night, guitarist Dean DeLeo began to play the signature riff behind 1994’s “Vasoline,” as cheers resonated throughout the amphitheater…