Brandi Carlile

I grew up in a single-wide, three-bedroom mobile home with my family. And now I see them, like, half a dozen times a year. Figuring out how to come home and talk to them again and feel like myself has probably been the greatest challenge.

It's really important to me to promote worthy causes. But not in a heavy, obligatory, responsibility way. I really admired that as a kid, learning about the 'Elton John AIDS Foundation.' And I was obsessed with The Indigo Girls. And they are the consummate activist group, always reaching out, especially to Native causes and things like that.

Music rhythms are mathematical patterns. When you hear a song and your body starts moving with it, your body is doing math. The kids in their parents' garage practicing to be a band may not realize it, but they're also practicing math.

You make your first album, you make some money, and you feel like you still have to show face, like 'I still go to the projects.' I'm like, why? Your job is to inspire people from your neighborhood to get out. You grew up there. What makes you think it's so cool?