SLOWHAND: The Life and Music of Eric Clapton. (Philip Norman)

Clapton transfigured three of the 1960s' most iconic bands, the Yardbirds, Cream and Blind Faith, walking away from each when it failed to measure up to his exacting standards. He was the only outsider be an honorary member of the Beatles and the Rolling Stones, and the studio musician of choice for solo superstars from Bob Dylan to Aretha Franklin.

Yet even as a rock god in excelsis, his true passion was always the blues. Even his own blues heroes, the likes of Muddy Waters, B. B. King and Buddy Guy, would recognise the supremacy of this wispy white boy from the English county of Surrey.

No life has been more rock 'n' roll than Clapton's in his epic consumption of drugs and alcohol, his insatiable appetite for expensive cars, clothes, and women - most famously revealed when he fell in love with Pattie Boyd, the wife of his best friend, George Harrison, and the inspiration for 'Layla'.