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A Cleveland semisupergroup, Gem features current and former members of Cobra Verde, Death of Samantha, My Dad Is Dead, and Prisonshake. Though principal songwriter Doug Gillard has Cobra and Samantha and not Prisonshake on his résumé, the quartet’s Hexed trends toward the latter on punchy, pithy songs like “Your Heroes Hate You,” and even manages to make sentiments like “I Hate It” suggest the Raspberries more than Pere Ubu. With Dizzy Dizzy at 11 p.m. at the 9:30 Club’s Atlantis, 930 F St. NW. $5. (202) 393-0930. (Mark Jenkins)