I had the chance to hear this performer as an "extra attraction" at a Tom Paxton, Louden Wainwright III and Mike Seeger evening a couple of years ago. I have not been as big a follower of blues performers as some, and had not crossed paths with him. But Hammond gave a truly visceral and powerful performance doing traditional blues. He was superb instrumentally and sang with great emotion. He has influenced and worked with many well known performers, while managing not to be a household word himself. How many of you know him or have seen his shows?