I had my first photograph published in 1976, a one-inch photo of Sham 69. It had my name down the side, and that got me jumping in the air. I went to a lot of gigs, took what I could and tried to get it to a magazine.

Usually I got the best photo towards the end of the gig. You have to put up with the jostling and sweat, people jumping. Often you're watching gigs, not taking enough notice of the music, but there have been moments when I've experienced something unique. When Stevie Wonder brought on Marvin Gaye and Diana Ross? I got very emotional. I saw Jeff Buckley and he got inside my soul. It raises your spirit.

It can be soul-destroying to be on the road with a band. It's a bubble, and I wouldn't recommend it to anyone, but I can see why it makes people happy. I've been up in front of the crowds to give introductions. I've yelled, 'Are you ready, Melbourne?' to thousands. It's great to hear them screaming for you, but I like being on the side. The darkroom used to make me very happy. It's like meditation in there, patiently waiting to see which images emerge.

'Happiness is a warm gun.' What is it, really? Who knows? Contentment with what you're doing, the friends you have. I'm aware of my happiness; I've felt the sadness of a divorce. Money or women - they seem to be the greatest sources of unhappiness.

I'm lucky with my pictures, I always have been, and that's what makes me happiest. Although I did miss that shot of Sid Vicious and Bob Dylan in the same dressing room...