Sonny Charles is an American soul singer best known as the frontman of the Checkmates, Ltd. in the 1960s. Known for his emotive, gospel-infused style, Charles notably brought R&B influences to the pop mainstream. His most significant work, "Black Pearl," reached the top of the Billboard R&B chart and remains a classic in the soul genre. Beyond his work with the Checkmates, Charles has also collaborated with other influential artists, including Steve Miller Band, adding his signature vocal style to their music.