If I pick up a guitar, I don't practise scales. I never have. I come up with something I haven't done before, new approaches to chord sequences, riffs, rhythms, so it becomes composition. It's not like the music I'm doing is just a single thread.
With Led Zeppelin, it has always been that mystique of how the music is done - how it works, why it works.
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.
In the Led Zeppelin shows of the Sixties and Seventies, it was the same numbers every night, but they were constantly in a state of flux. If I played something good, really substantial, I'd stick it in again.
I do know there's a lot of music where Led Zeppelin has been leant on. We didn't do anything about it. And I wouldn't want to, either.
Nobody could have predicted the effect of John Bonham's drum introduction on 'Good Times, Bad Times,' because no matter what he'd played in before, he'd never had the chance to flex his muscles and play like John Bonham.
There's such a currency to Led Zeppelin, or the members of Led Zeppelin. If I put it to you this way, on the run-up to the O2 concert, the only music that we played was music of Led Zeppelin - the past catalog stuff; that's what we played on the way towards shaping up the set list for that. But we played really, really well.
The Stones are great and always have been. Jagger's lyrics are just amazing. Right on the ball every time.
I wanted to emulate music from America - young punks playing rock n' roll is what it was. I read part of Keith Richards' autobiography, and it was totally parallel with me, learning from American records.
I played guitar all my life, all the way through the Yardbirds, but I knew that for me, this was going to be a guitar vehicle, because that's what I wanted it to be. There is no way I would play guitar like a tour de force like I did in Led Zeppelin.
There is no point in putting out 'The Complete BBC Sessions,' and someone's growling that you missed something.
When I was still in the Yardbirds, our producer, Mickie Most, would always try to get us to record all these horrible songs. During one session, we recorded 'Ten Little Indians,' an extremely silly song that featured a truly awful brass arrangement.
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.
The one person who's disappeared out of the business is the A&R man. Because the listener at home becomes the A&R man. He's the one who chooses what tracks he wants on the album. And that's cool.