If you look at a lot of the songs I've been involved in, there's always been this retro vibe. I started getting worried that I wasn't moving forward very much, nor was I even in tune with the music today. I almost scoffed at it.

I don't have a Twitter or a Facebook, but that doesn't mean I'm any more productive than the rest of the world.

A lot of times when I'm writing lyrics, I just think about insecurities that I might have and turn them into a scene. Some things may be true, and some things may not.

Lyrics are so important, I hate every second of writing them, but it's something I take great pride in when it's finished.

I don't play an instrument - I just write in my head, and I usually hear fully formed songs. 'We Are Young' turned out so much like it was in my head. But it also exceeded all my expectations.

I worry that if I enjoy something - like the songs on 'Some Nights' are about wondering about who you are. I'm never quite sure and I'd hate to feel sort of content and get a good sense of who I am because if I know one thing, that's not me. I don't mind not necessarily being happy about it. And that's fine.

I try and get about eight hours of sleep every single night. And I like to think that I drink more water than anyone, ever.