Honeyboy Edwards. Eric Clapton would kneel to this great old man. He is the last living guy to the Robert Johnson era, and, in his 90’s, still, a very astute sharp guy.
And, here’s his MySpace page. This man puts longevity into true perspective. He’s seen the whole progression of blues/jazz/rock, and is still performing. A mighty shout out for this last of the Elder generation who laid the foundation for American music.