Look at the figure dead-centre: knees bent, body coiled into a violent diagonal, the neck of a bass guitar driven down toward the stage like an axe mid-swing. You cannot see his face. You do not need to. Every line of the body, the bent spine, the rigid arms, the planted boots, is loss of control frozen a fraction of a second before the wood splinters.

This is Paul Simonon, bassist of The Clash, demolishing his Fender Precision Bass out of pure frustration. He never blamed the instrument. "I wasn't taking it out on the bass guitar, cos there ain't anything wrong with it," he told Fender in 2011. "That frustrated me to the point that I destroyed this bass guitar... Unfortunately you always sort of tend to destroy the things you love."

The woman who caught it thought it was ruined. The picture is grainy, slightly soft, the background dissolving into a smear of monitor cables, stage lights and the pale ghosts of distant figures. She wanted to throw it away. The accident became the definitive image of the band. To see why the blur is the whole point, look closer.