That's the music that I play at home all the time, Joni Mitchell. Court and Spark I love because I'd always hoped that she'd work with a band. But the main thing with Joni is that she's able to look at something that's happened to her, draw back and crystallize the whole situation, then write about it. She brings tears to my eyes, what more can I say? It's bloody eerie. I can relate so much to what she says. "Now old friends are acting strange/They shake their heads/They say I've changed."

I guess the solo from 'Achilles Last Stand' is in the same tradition as the solo from 'Stairway to Heaven'...it is on that level to me.

You can't just find yourself doing something and not happy doing it.

There's music that can affect people in their lives, and they will always relate to the point that they heard it and experienced it, either if you're playing it or you're receptive, as an audience.

I'm obsessed - not just interested, obsessed - with folk music, street music, the parallels between a country's street music and its so-called classical and intellectual music, the way certain scales have travelled right across the globe. All this ethnological and musical interaction fascinates me. Have you heard any trance music? That's the thing.

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

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