People talk so much about Justin, he doesn't even need a last name anymore.

		JC Chasez Where: Chevrolet Amphitheatre, Station Square. When: 7 p.m. Sunday. Tickets: $20 advance; $22 at the door; 412-323-1919.

But 'N Sync had -- or has -- another dynamic frontman in JC Chasez, who joined the ranks of solo artist this spring when he released "Schizophrenic," a record that does its title proud.

Chasez comes to the party as a sexed-up pop stud with no commitment to any particular style, as he blows through Latin beats, techno, funk, R&B, even New Wave.

If Timberlake is informed by the slicker pop of Michael Jackson, Chasez seems to follow Prince's more chaotically funked-up lead, even if he himself doesn't see it that way.

"Everybody's got their own opinion," says the 27-year-old native of Washington, D.C. "I don't really see how people see the Prince thing. I think the only reason people are saying that is because it's diverse. When you listen to Prince, it can be an R&B record or a rock 'n' roll record, and that's what people are getting out of my record. That's why it's called 'Schizophrenic.' "

Chasez, who plays the Chevrolet Amphitheatre Sunday, is on the phone from Birmingham -- UK -- where he is touring with Justin's old flame and his own Mouseketeer buddy, Britney, in venues larger than 'N Sync ever played there.

"It's a lot of fun, man. It's the first time I've gotten to play to a crowd this big in the UK. As much as we toured over here, we never got to play shows in arenas like that."

The last time Chasez was on the road was when the boy band was setting the world on fire on its Celebrity tour in the spring of 2002. At the time, he swears, he had no thoughts of what a JC Chasez solo record would be like.

"I actually never thought about doing a solo record while we were still touring. I was totally happy cutting records with my friends."

And once the tour ended, he just wanted a long vacation. "I decided to just hang out with family and friends and really just cool out and be with them for a while. I'd been on planes, trains and automobiles for nine years and it was time for me to get back to being me."

About nine months into his hiatus, he hooked up with a friend, Dallas Austin, who was producing the "Drumline" soundtrack and they beat out a track called "Blowin' Me Up (With Her Love)." With that, he was on his way to a solo record for which he co-wrote all 15 tracks, including "All Day Long I Dream About Sex," which never would have found its way on an 'N Sync record

Chasez says he liked the freedom of working on his own project. "Whenever I'm working with the guys there's always compromises made, sometimes you agree with them, sometimes you don't, but you can't be selfish. When I did my own record, I didn't have to compromise. I did whatever I wanted and it was cool to see some ideas that might not have gone all the way go to the fullest extent and even further."

One happy accident was a meeting one day in London with techno wizards Basement Jaxx.

"We weren't supposed to be working together," he says. "I was just passing through town and looking for a fun place to go out one night. They asked me to stop by the studio and hang out there, and they were telling me where the fun spots were, but after I hung out a little bit, we just decided to try something different, so I hopped in the booth, and the next thing you know, we had a record."

They cut "Plug It In" for the Jaxx album "Kish Kash" and the grinding club track "Shake It" for "Schizophrenic."

Thus far, though, Chasez hasn't come anywhere near the success of Justin's project. It debuted at No. 17, but the odd, Latin-tinged first single, "Some Girls (Dance With Women)," didn't connect and the record has fallen off the charts. They hope to revive it with "All Day Long I Dream About Sex," a single that sounds like a throwback to the New Wave of the Human League. And Chasez is working the record for crowds in concerts that are smaller-scale and looser than the 'N Sync blockbusters.

"I still go out of my way to entertain. I'm not doing choreography for every show, but that's a conscious choice. The album is a lot looser, a lot more open-minded and so is the show. It's a high-energy show, but not every moment is planned. With 'N Sync, it seems like every talking part is sort of written out and planned. And this show is nothing like that."

Not that Chasez is bad-mouthing his old group. In fact, he's looking forward to working with his old mates again.

"It's always in the back of our minds," he says. "We talked about getting on the drawing board this summer. We're going to start kicking around creative ideas and then it's just a matter of when the right material comes together."