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Sonny Charles is an American soul singer from Fort Wayne, Indiana. He was the lead singer of Checkmates, Ltd. in the 1960s and 1970s, and it is his vocals that are heard out front on their 1969 Phil Spector-produced hit, "Black Pearl." Charles launched a solo career in the early 1970s, and had a brief reunion with the Checkmates during the 1980s. Thereafter, from the mid- to late 1990s, he toured with another member of the Checkmates, Ltd., Marvin "Sweet Louie" Smith, under the Checkmates name.