Willie James Mabon (October 24, 1925 – April 19, 1985) was an American R&B singer, songwriter, pianist, and harmonica player. He had two number one hits on the Billboard R&B chart, "I Don't Know" in 1952 and "I'm Mad" in 1953. == Career == Mabon was born and brought up in the Hollywood district of Memphis, Tennessee. He moved to Chicago in 1942, by which time he had become known as a singer and pianist. He formed a group, the... [more on Wikipedia]