I will still carry on changing all the time.

Let me explain something about guitar playing. Everyone's got their own character, and that's the thing that's amazed me about guitar playing since the day I first picked it up. Everyone's approach to what can come out of six strings is different from another person, but it's all valid.

My vocation is more in composition really than anything else - building up harmonies using the guitar, orchestrating the guitar like an army, a guitar army.

I know what I want to get down and I haven't got much time to do it in.

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!

You never knew what was going to happen in concert. It was a really exciting prospect to go onstage, and you can hear that in the live recordings ... wherever we were and whatever year it was, we always went onstage determined to do our best.

I don't like to tell people what format they can get things in, or say, "I'm only going to release this on vinyl and nothing else. You have to come to my world." I don't like to say that to people either. But, I do think there's a loss of romance.