Slim Harpo (born James Isaac Moore; January 11, 1924 – January 31, 1970) was an American blues musician, a leading exponent of the swamp blues style, and “one of the most commercially successful blues artists of his day”. He played guitar and was a master of the blues harmonica, known in blues circles as a “harp”. His most successful and influential recordings included “I’m a King Bee”, “Rainin’ In My Heart”, and “Baby Scratch My Back”.