No blues singer ever presented a more gentle, genial image than Mississippi John Hurt. A guitarist with an extraordinarily lyrical and refined fingerpicking style, he also sang with a warmth unique in the field of blues, and the gospel influence in his music gave it a depth and reflective quality unusual in the field. Coupled with the sheer gratitude and amazement that he felt over having found a mass audience so late in life, and playing concerts in front of thousands of people -- for fees that seemed astronomical to a man who had always made music a sideline to his life as a...