The Mississippi Delta is the source of America's deep and pervasive blues tradition. At a time when that tradition appeared in danger of disappearing, many of its most elemental practitioners reappeared to remind us of the bruising force of this music's headwaters. They were living legends who demonstrated strong bonds with legends passed. Eddie 'Son' House had been associated with Charley Patton and was a mentor both to Robert Johnson and Muddy Waters. Johnny Shines had traveled with Johnson and absorbed his music before joining the Delta's émigrés to Chicago.