There was no working title for the album. The record-jacket designer said `When I think of the group, I always think of power and force. There's a definite presence there.' That was it. He wanted to call it `Obelisk'. To me, it was more important what was behind the obelisk. The cover is very tongue-in-cheek, to be quite honest. Sort of a joke on 2001. I think it's quite amusing.

Crowley didn't have a very high opinion of women, and I don't think he was wrong.

Many people think of me as just a riff guitarist, but I think of myself in broader terms. As a musician I think my greatest achievement has been to create unexpected melodies and harmonies within a rock and roll framework. And as a producer I would like to be remembered as someone who was able to sustain a band of unquestionable individual talent, and push it to the forefront during its working career. I think I really captured the best of our output, growth, change and maturity on tape - the multifaceted gem that is Led Zeppelin.