About Billy Stewart
William Larry Stewart II was an American R&B singer and pianist popular during the 1960s. The first single released from the album was Stewart's radical interpretation of the George Gershwin song, "Summertime", a Top 10 hit on both the pop and R&B charts. By 1955, Stewart had a recording contract with Diddley's label, Chess Records and Diddley played guitar on Stewart's 1956 recording of "Billy's Blues". Stewart switched to Okeh Records and recorded "Billy's Heartache", backed by the Marquees, a D.C. area group which featured Marvin Gaye.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.