Men of great ambition have sought happiness . . . and have found fame.

It's about you putting in the work, practicing every day, and hopefully one day you write the song the whole world wants to get down to. And one day you're going to be sitting next to Ellen DeGeneres talking about how you broke records and rocked the Super Bowl!

I don't want to sound presumptuous, but I've made it my goal to revolutionize pop music. The last revolution was launched by Madonna 25 years ago.

I don't care what people say about my relationship; I don't care what they say about my boobs. People are buying my songs; I have a sold-out tour. I'm getting incredible feedback from my music.

For some people, fame kills it and becomes more important than the music or the performance. But for me fame is like rocket fuel. The more my fans like what I'm doing, the more I want to give back to them. And my passion is so strong I can't sleep - I haven't slept for three days.

I work with my brother Finneas, and he produces all of my music in his little bedroom in our house. We actually tried renting out a studio for a month when we were producing 'Don't Smile at Me,' but it was really hard there, and we ended up just doing it at home anyway.