Tickets go on sale this Saturday for K-Rock's 'Spring Thing' to be held May 17 at Cole Muffler Court at the New York State Fairgrounds. Chevelle and Unloco, two bands that are part of this year's Ozzfest tour, headline the show. Also on the roster: (Hed)PE, Pacifier, Off By One, and K-Rock's house band, Thunderosa.