Seeing people's faces, really getting off on them, makes me incredibly happy. Genuinely.

But if you want me to knock Kingdom Come, all I will say is that I heard the guitarist said he'd never heard my playing, and I'd defy any guitarist in American not to have heard Led Zeppelin.

There are very few people I can call real, close friends. They're very, very precious to me.

I suggested back in 1980 to do a chronological live album, but there wasn't that much enthusiasm for it.

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.

You can't expect to be the same person you were three years ago. Some people expect you to be and can't come to terms with the fact that if a year has elapsed between LPs, that means one year's worth of changes. The material consequently is affected by that, the lyrics are affected by that... the music too.

Well, Led Zeppelin IV! That's it really. I'll tell you why the album had no title - because we were so fed up with the reactions to the third album, that people couldn't understand why that record wasn't a direct continuation of the second album. And then people said we were a hype and all, which was the furthest thing from what we were. So we just said, `let's put out an album with no title at all!' That way, either people like it or they don't... but we still got bad reviews!