By all accounts, he was not a nice man, but he could play the blues on a harmonica. You will not hear a smoother harp player; listen to "Bring It On Home," not a wasted note, and perfect timing.
Note the harmonicas on top of the tombstone, harmonica players make the pilgrimage and leave harmonicas. Unseen at the base of the tombstone are cans of beer, also left, not necessarily by harmonica players.