I came from somewhat of a musical family. I had an uncle on Broadway. My dad kind of knows how to play instruments. Although, I always find it annoying when he does play an instrument.

I think any branding for me is band-related. It's really weird to get used to the exposure, because I am a naturally introverted person, and I'm not exactly social. Occasionally I can get comfortable enough to talk, but I spend a lot of my days not talking, especially when I'm at home and not on tour.

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.

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.

It's important that I get time to run, to just go for a jog for about 30 minutes. It helps with my voice, but it also kind of gives me a little bit of time to myself - and you get to see a city.

If you can make the song a soundtrack to what you're living at the time, I think that's the most important part of a song.