I idolised bands like Pearl Jam and Smashing Pumpkins, who wanted to reach as many people as they could.

Even now, when I try and think of band names just randomly, I'm so thankful that 'fun.' is the name of the band. I never really think twice about it. It is so simple and so easy.

I would love to play a show with Kanye West. That would be amazing. I want to play a show with Tom Petty or Bruce Springsteen. It would be really fun, especially to stick around, watch their show and watch how they work a crowd. It's really a wonderful thing.

I was signed at 19 years old to a major label, and dropped by the time I was 22.

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 knew how touring was for 10 years, but it's completely different now that things are popping off.

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.