While your at the store, pick up any of Doug MacLeod's albums. Incredible acoustic guitar player. I'm assuming from your post that you already have all the usual suspects, Hopkins, Waters, Sonny Terry, etc., and are looking for more recent artists. A absolute must have is Mary Gauthier. She's the real deal, not someone that is just singing and playing the blues, she lived them and you can hear it. One of her more simple songs is called "I Drink", and when she sings it you know it is from experience.
