A wonderful documentary on the greatest bluesman. I saw him up at the Byron Bay Blues Festival in 2014. The place was packed but his performance was terrible. Everyone around me were saying the same it was awful. I'll never forget at the end of his act however as the whole crowd stood up as one and roared their approval and basically said thank you for the wonderful years of great music. I was in tears from the audiences response. The documentary is terrific and actually explains at the end of his career what was going on.