Sonny Boy Williamson I, also known as John Lee Williamson was an American BluesHarmonica player, born in Jackson , Tennessee , whose first record 'Good Morning, School Girl' was a hit in 1937. He was widely popular throughout the whole southeast and practically synonymous with the BluesHarmonica for the next decade, making his a commonly used stage name by the time he was murdered in 1948. This Sonny Boy Williamson was born on 30 March , 1914 , and died on 1 June , 1948 .