When you're singing we all phrase each other in the most remarkable ways. I might hit some sort of thing I've never done before - some vocal pattern. Bonzo will pick it up - he'll phrase with me instantly and then Pagey may join in or start some other phrase - it's like a quadrant.

I know that bands that haven't put out a record for 10 years are playing to 20,000 people a night. But that's not the achievement.

The essence of Bonham is what he didn't play rather than what he did play - what he left out.

Since I was a kid, I've had an absolute obsession with particular kinds of American music. Mississippi Delta blues of the Thirties, Chicago blues of the Fifties, West Coast music of the mid-Sixties - but I'd never really touched on dark Americana.

Come into my life, here where nothing matters. Come into my life, roll away the gloom.

The essence of my lyrics is the desire for peace and harmony. That's all anyone has ever wanted. How could it become outdated?...We are trying to communicate a fulfilled ideal...I am a reflection of what I sing. Sometimes I have to get serious because the things I've been through are serious...The way I see it, rock n' roll is folk music.

I'm not interested in being known as the singer from Led Zeppelin.