I really wasn't needed... Just straightening up riffs, that's all. Just two guitarists doing it instead of one.

We kept moving forward and didn't try to recreate the past .. the approach to each album was radically different every time. Many bands would have some success and, because they were locked into having a single - something we didn't have to worry about - they had to make sure there was something similar on the next album ... that was never the idea with Led Zeppelin .. the goal was to keep that spark of spontaneity at all times.

When you hear the melodic structures of what classical musicians put together and you compare it to that of a rock & roll record, there's a hell of a long way rock & roll has to go.

I do not worship the devil. But magic does intrigue me. Magic of all kinds. I bought Crowley's house to go up and write in. The thing is, I just never get up that way. Friends live there now.

I don't know whether I'll reach 40. I don't know whether I'll reach 35. I can't be sure about that. I am bloody serious. I am very, very serious. I didn't think I'd make 30.

We went in and recorded exactly where we were at that point in time. I think because of the quality of musicianship of the band has given it the longevity. I thought the music would endure, I didn't think I would ... I always thought I'd be dead by 30, then dead by 40 and on and on. Now I'm 55 so I didn't even die at 50.

My guitar style was developed during that 10-year period. That's me. That's the way I play, and I don't wish to play any other way. Our own individual identities are firmly stamped on this album.