I met Prince William at a musical festival and he let me know he was a fan of my music. But the invitation to sing at his wedding reception came completely out of the blue. The fact that Kate and William knew the words to my songs was very touching.

You never know what to expect. You don't just walk on and expect an amazing reaction.

I think, it is a challenge to get critics or whoever to see past what you wear and makeup and the way you look and just concentrate on the music.

I think I'd like to be best friends with Björk, because I'd like to pick her brain a lot all the time and just have weird times together.

Even when I'm in quite a happy state of mind, I like writing really sad songs. I think a lot of people do.

I want to be safe in the knowledge that I can tour and play festivals for a long time. The main thing is that I want a good reputation as a live performer. If I have that, I'd be so happy.

I find male singers and what they sing about fascinating. It makes me realize how little we know about ourselves and how little I know about myself. It's interesting to see the male perspective.