When I am with my family, then I can just sort of switch off. It's kind of weird, because I go back and I go into this bedroom that I have had since I was a teenager. It is like this parallel universe, because one minute I am on the red carpet and then the next I am hiding out in this room I have had since I was 15.

I was having a conversation with my father and he was talking about this thing - strangeness and charm. It's actually the name of the two smallest particles that there are when you split the atom, so I wrote a song around it. I even managed to fit the word 'hydrogen' in there. Isn't that a nice thing for scientists to call them though?

I've learned not to hide behind a veil of irony - to talk about my work in a more honest way.

I want my music to sound like throwing yourself out of a tree, or off a tall building, or as if you’re being sucked down into the ocean and you can’t breathe… It’s something overwhelming and all-encompassing that fills you up, and you’re either going to explode with it, or you’re just going to disappear.

Look, if Givenchy is going to lend you a dress, I'm not going to turn it down. I would wear that dress to just go out and buy a pint of milk if they would lend it to me.

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.

'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.