“Over Under Sideways Down”: The Yardbirds performed this song on Ready Steady Go! in 1966. In a rehearsal, 21-year-old Jeff Beck, a friend, moved away from the band a little, over to where I was standing, and extended the guitar break for fun … or like a gift. The skin rose on my arms; goose bumps followed. Never before—or since—have I felt so enraptured by musical sound. It came to an end, and Jeff raised his head, tossed a lock of his black hair out of his eyes, gave me his lady-killer’s smile, and rejoined his bandmates.