Bono told me how to dance in high heels and he also told me about U2's Glastonbury performance and how everything that could have possibly gone wrong went wrong, including him ripping his trousers on stage. I think he was lunging and his trousers ripped! He was telling me how he had to find a new way of performing that didn't involve moving.

I definitely have a real self-destructive streak.

I always seem to feel that everything is about to cave in on me. I think that maybe music is my protection from that and in some senses it's an outlet to turn it into something euphoric: embracing the eventual decline.

At the beginning of my career I was going through a really weird phase of dressing in boys clothes. I would only wear one American Apparel T-shirt and shorts and brogues the whole year round. Not the same T-shirt, obviously, but one style of American Apparel T-shirt. I think I was going through a tomboy stage.

In a conversation, the words can get stuck, I don't know what to say, I get very anxious.

The stage is a place where I can be wholly myself. Even though you're in front of people almost to be judged, it is a place without judgement.

I think I should get a bigger between-the-song persona, so then I'm not wandering around the stage like some mad old auntie that's saying hello to people and falling over.