There is far more sensitivity in acoustic guitar players than could ever be compared to any synthesizer. That's a personal point of view but that's the way I see it. I think that's what it's all about. The drive, the fire, the passion - it all comes out on the guitar.

We were never a band that did 96 takes of the same thing. I had heard of groups that were into that kind of excess around that time. They'd work on the same track for three or four days and then work on it some more, but that's clearly not the way to record an album. If the track isn't happening and it creates some sort of psychological barrier, even after an hour or two, then you should stop and do something else. Go out: go to the pub, or a restaurant or something. Or play another song.

There's a very old recording maxim that goes, 'Distance makes depth.' I've used that a hell of a lot-whether it's tracking guitars or the whole band. People are used to close-miking amps, but I'd have a mic out around the back, as well, and then balance the two. Also, you shouldn't have to use EQ in the studio if the instruments sound right. You should be able to get the right tones simply with the science of microphone placement.

I do really believe that all guitarists have a different character that comes through, that's a strong character, the stronger the person is.

There will be a Led Zeppelin as long as there's a Jimmy Page, John Bonham, John Paul Jones and Robert Plant. This isn't a nostalgia band playing the hits forever. If anything ever happened and somebody left - which I really can't see happening - I don't think we'd bother to carry on. The magic for me is as it is now.

Every musician wants to do something which will hold up for a long time, and I guess we did it with 'Stairway to Heaven.'

There is far more sensitivity in acoustic guitar players than could ever be compared to any synthesizer. That's a personal point of view but that's the way I see it. I think that's what it's all about. The drive, the fire, the passion - it all comes out on the guitar.