Williamson, Sonny Boy

Williamson's unique playing style quickly distinguished him from the generation of harmonica players that preceded him, and he greatly expanded what the instrument could do musically. He played his harmonica cross-tuned—with the key of the harmonica a fourth above that of the music. Thus, if the tune was in the key of D, Williamson would play a G harmonica. This allowed him to “draw” most notes and “bend” them more easily, producing flattened “blueblue...