I think there's just so many people in the world that don't feel understood, and when you hear a song and you go, 'Oh, that song understands me,' that's an amazing feeling. I get it when I listen to the radio... That's a beautiful part of music.

- Keith Urban

A song like 'Once in a Lifetime' is inspired by my marriage - it's a good, life-changing happening in my life. I think when you find your once-in-a-lifetime love, that's what everybody's looking for.

- Keith Urban