Somebody had given me a copy of 'Hunky Dory,' which had yet to be a hit, although it was starting to percolate. I'd seen a couple of pictures of David, with his interesting hairdo and outfits, and I decided to seek him out, which wasn't difficult back then, as he was eager to do any kind of publicity.

It's funny because unlike back in the seventies when I made hardly any money, today I could just live off the past if I wanted to. I have no interest in that.

People think: 'If this photographer's looking like a big jerk-off, maybe it's okay if I do.' I like to catch my subjects off balance a bit.

I'd photographed musicians before but this was different. Syd was very charismatic, and he had the aura of a poete maudit, which made him the perfect subject for me - I realised that rock n' rollers were the modern equivalent of all the poets I was so enamoured with.

I don't think piracy is going to kill the music industry. But digital technology and the ability to download will change the packaging from CDs to a single-based business.

With all the cable and Internet channels you have available, you have so much opportunity. If you want to say something, you can say it and have people see it.

What would the infrastructure of the Internet look like if mass surveillance wasn't its business model?

The Internet has crept up on us, and we need to know what it is and start looking at it. We have to decide which bits we want, which bits we don't, and how we're going to use them - and how we're going to put pressure on the people who deliver these goods to deliver what we really want.