When you've been a character in a movie - and this has happened when we've done concerts as Spinal Tap or as The Folksmen - people see you as characters walking out of a movie. And you appear in public, then, to play, it's a very schizophrenic thing.

To me, what I realized when we were doing 'Spinal Tap' - and the four of us wrote that - is, really, the core of that is the relationship with the two guys who grew up together and that strain when the girlfriend comes in. If that wasn't there, it's a very different movie. Then it's just bumbling guys stumbling along.

'This is Spinal Tap' was a film we felt really had to be done like that. It wouldn't have worked any other way. And it turned out to be the first time a fiction film had really been made in a documentary format. I continued to do that, obviously, because it's a fun way to work.

In 'Spinal Tap,' there's the fake historical quality of 'Stonehenge.' It's something the musicians look at with a mystical reverence. In folk music, it's the seriousness with which these people approach their 'art.'

I was in the pilot for Spinal Tap before it was a movie.

This Is Spinal Tap.