Fate works in strange ways. In the annals of blues history, coincidences and events can take on mythical qualities with the passing of time, their improbable circumstances suggesting that destiny is something that cannot be denied. Witness these tales: a young DJ named Riley "Blues Boy" King is asked to fill in a performance slot for a traveling Sonny Boy Williamson on a popular radio show in Arkansas; a down-and-out- Buddy Guy gets encouragement and a sandwich from Muddy Waters when he tries...