I saw him once, back in my (and his) younger days. I was leaving a bar near historic Ford's Theater in DC (Lincoln attended a play there). Some friends and I walked across the street into the 9:30 Club. It was very late so they were no longer monitoring people going into the club, so we just walked right in and caught the last few songs of his show. Good stuff. He had that crowd whipped into a frenzy by the time we got there!