Playing twangy, rangy neo-hippie rock, Connecticut’s Mighty Purple could join Phish among New England’s psychedelic sensations. Based on an advance tape of its new album, Black River Falls, though, the band’s not so inclined toward lengthy, going-nowhere musical excursions. The Purple opens for Ugly and 6 Foot 7 at 9:45 p.m. at the 9:30 Club, 930 F St. NW. $5. (202) 393-0930. (MJ)