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Can Bristol, England’s Portishead capture the “triphop” of their 1994 debut, Dummy, live? On disc, the group’s 22-year-old mastermind Geoff Barrow mixed samples, programmed hiphop beats, Adrian Utley’s spy-movie soundtrack guitarwork, and Beth Gibbons’ eerie torch-song melodies into a hypnotic studio-concocted brew. On tour, Barrow has chosen to replace his sampler and computer with a full band augmented by himself on turntables. To Kill a Dead Man, a surreal 10-minute, black-and-white film created by Barrow and his cohorts, precedes the performance at 8 p.m. at Radio Music Hall, 815 V St. NW. $17.50. (202) 393-0930. (Steve Kiviat)