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In mid-’70s Jamaica, a number of reggae harmony vocal trios such as the Mighty Diamonds, the Meditations, and Culture began recording their passionate patois over languid guitar, bass, and drum rhythms. Joseph Hill, lead singer and songwriter for Culture, may not have been the most soulful crooner of the bunch, but his stylish use of melisma and Rastafarian populist lyrics have sustained his group’s sound for nearly two decades. While recent efforts from the band do not seem quite as vital as their debut Two Sevens Clash, Hill and company continue to offer invigorating takes on the genre they helped originate. Black Sheep opens at 10 p.m. at Kilimanjaro, 1724 California St. NW. $15. (202) 328-3838. (Steve Kiviat)