I get in fights with my sister all the time. She comes on the road with me and we fight - like sisters do.

Having a soul, they say, is like taking sadness and turning it into something beautiful.

I have this sensation of being in flight all the time, but being on stage is like creating a sanctuary in which you can completely lose yourself. The bits of your personality that you keep under wraps in ordinary life, you can let them run free.

I definitely have a real self-destructive streak.

I feel a responsibility to the fans who have paid to see me and I want to give as good a show as I possibly can.

'Dog Days' was recorded with pens and the wall, and half a stolen drum kit that was out of tune, in what was basically a cupboard. The only instrument I could really play was my voice, so we just layered everything a hundred times. It was enthusiasm over skill.

I got to live out my 11-year-old fantasies - I got to go on stage with Green Day. Billie Joe called my name from the stage. 'Dookie' was the first album I ever bought. I covered the whole of 'Nimrod' and he'd heard it. That was like the 11-year-old girl dreamed.