Q: The crowds at your shows look pretty fresh-faced. What's the youngest fan you've encountered?
A: I met a six-month-old baby. I've got some young fans, but the majority of them are like 14, 15. My mom's like 35, so she's my oldest fan.

Q: I've heard that some of the teens flash you their bras.
A: I mean, I don't mind it. Just kidding—it's not something that's cool for them to do. There was this one girl in Seattle—I didn't even see her—she runs at me, tries to give me a hug and tackles me. It was really aggressive and scary.

Q: Your fans show up to your shows wearing the same American Apparel hoodie you wore in your "One Time" video. Are you cultivating a style?
A: I'm just a kid that wakes up like everyone else and just puts clothes on—like a hoodie and jeans and some fresh kicks, Supras or high-tops.

Q: What's up with the mop-top hairdo?
A: I think the girls like it, so I'm going to let it stick around for a while. I really don't think anyone's ever done this kind of thing with their hair: I just wake up, blow-dry it, and just shake it. And continue to shake it throughout the day.

Q: What are the first songs you loved?
A: "God Is Bigger Than the Boogie Man" from VeggieTales. And when I was, like, 7 or 6, Boyz II Men's "On Bended Knee." My mom used to play the album over and over. I would go to my bedroom and try to do the vocal acrobatics.

Q: How do you feel about the whole teen-pop scene?
A: I think some of it is corny, but that's just me. I just think that if you're a musical artist you should do something that appeals to all ages. I mean, I have songs that are about love, but I have songs that are about everyday life and stuff that people can relate to. When I was very young my parents split up, and that was hard on me. So I have a song that talks about that. I want to have a career, not just a hit.

Q: Before you signed with Usher, you were pursued by Justin Timberlake, whom you're often compared to. Did you guys hang out?
A: I was really more excited to meet Jessica Biel. They invited me to their home, and we watched March Madness.

Q: You're single now, but you have dated, right?
A: I've had girlfriends—nothing really, really serious, but I've had girlfriends. My first was when I was, like, 12 or 13. A month later, we broke up. I had that little stomach pain for a couple of days, but then I was cool. Now I'm waiting for Beyoncé to call.

Q: What about Taylor Swift? You dedicated one of your YouTube videos to her.
A: No, no. She's a little too old for me—and definitely too tall.