"George did that famous charity concert for the people of Bangladesh. It was the first kind of rock 'n' roll charity that had been attempted. Now rock musicians are constantly doing good and raising money, but this was the first one.
"My friend Chip Monck was the lighting and staging director. He said I should go to this great concert but I said that I didn’t even know if I could get a photo pass. He told me to turn up on the day and he’d give me a crew pass and I could take my cameras in and hide them under his light board, which I did.
"I spent the whole day there as a crew member and when the concert started I took my camera out and took that picture. I didn’t want to be kicked out because they only had one or two people shooting, so that was a pirated shot!"