All the words are already there when you're singing onstage, it's fantastic. You can lose yourself in what you've created. You're controlling this freedom.

I was always that girl growing up who you could find dancing down supermarket aisles. It's that sense of not feeling inhibited. Dancing in supermarkets is my favorite thing.

It was a complete dream to work with David LaChapelle. I collected his books as a teenager, and I fantasised that he would direct the video for 'Spectrum' from the moment the song was written. I still can't believe it actually happened, 
and I'm completely overjoyed that he felt such a connection with the song.

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.

Hands up if you’re ready to do something you’ll regret this weekend. Go forth! You have my blessing.

I wanted to be a witch when I was a kid. I was obsessed with witchcraft. At school, me and my two friends had these spell books; I always wanted a more magical reality. I had a little shrine at home and I did a spell to try and make the boy in the other class fall in love with me.

I think an encore is perfectly acceptable, but I find it so weird when people do two or three.