Very sad indeed. I've been looking at his playing lately with some of my guitar students. Trying to teach them some style and space in their playing.
I saw him in Dublin back in 1994, big open-air gig in the middle of the city (at College Green). Thousands came out to see him. His guitar playing was of course wonderful, as always, but voice was what I remember most. One of the giants of 20th century music, his influence on popular culture and music will live on.