He was a monster in his day. I only saw him once about two years ago, he did a small show at the University here. Was frail and couldn't play for very long but still had a strong voice and great band with him, it was fun. Check this out if you haven't seen it Beanz, there is a full DVD of the sing sing prison concert that's worth downloading, really cool atmosphere for the blues that's for sure. His playing is at it's peak here imo.