Hey, Mister Tambourine Man, have a cup of tea. Bob Dylan, seen studying the camera with narrow eyes, looks surly and suspicious here. It might be because the tea isn't good. It might because someone's shoved him backstage in a room where the lightbulb is on the wall and there's exposed piping overhead. Or, more likely, it's because he knows what he's about to go and do.
This picture was taken at an iconic gig - it's backstage at Manchester's Free Trade Hall in 1965, in the middle of the tour where Dylan made the move from acoustic to electric guitar. What may seem trivial now caused uproar at the time, with one man screaming 'JUDAS' at Dylan during a pause in his set. Dylan responded by directing the band to play louder and faster - and folk music had given way to rock and roll.