Robert McFerrin

Robert Keith McFerrin Sr. (March 19, 1921 – November 24, 2006) was an American operatic baritone, notable for being the first African-American man to sing at the Metropolitan Opera in New York City. His voice was described by critic Albert Goldberg in the ''Los Angeles Times'' as "a baritone of beautiful quality, even in all registers, and with a top that partakes of something of a tenor's ringing brilliance."

McFerrin was the father of Grammy Award-winning vocalist Bobby McFerrin. Provided by Wikipedia