When Muddy Waters came to London in the early '60s, Joe Boyd was his tour manager. When Dylan went electric at the Newport Festival, Joe Boyd was plugging in his guitar. When it was the summer of love, Joe Boyd was running the coolest club in London, the UFO. When a bunch of club regulars called Pink Floyd recorded their first single, Joe Boyd was the producer. When a young songwriter named Nick Drake wanted to give his demo tape to someone, he...