The Teenage Cancer Trust does incredible work supporting and caring for teenagers and young adults with cancer, and it's a cause that is really close to me and my family.

When you're heartbroken, you're at your most creative - you have to channel all your energies into something else to not think about it. Contentment is a creativity killer, but don't worry - I'm very capable of making myself discontented.

I can't just have one painting - I need to cover the wall in paintings. It's the same with my music. I want to mix everything together to create more.

I'm one of those people that is up for most things. When I was offered to sing at the Oscars I was like, 'Yeah, I want to know what that's like!' I'm always curious to know what things are like - as long as you're not compromising who you are.

When you're dressed up as David Bowie, with your eyebrows completely bleached, and you're doing this kind of strange dance with Paul McCartney while singing "Rebel Rebel" in the middle of the Met ball, and Madonna's looking at you . . . I was just thinking, It's become a bit weird.

I started off singing in church as a child. The sound of voices coming together, that was my first moment of touching something outside of myself.

I dyed my hair red when I was ten and when I was 11 - in my goth period - I dyed it black and I was really into witchcraft. I made mini shrines in my bedroom with candles and tried to cast spells to make the boy in the next class fall in love with me. I don't think he did.