Nothing frightens like a little adult-contemporary.

Tomorrow night, chart-pop wonderboy John Mayer and the Faroe Islands' most famous folkie Teitur will play at the Bryce Jordan Center. Don't trade in those Urkel masks for Dockers just yet, though. You might need them.

"Since it's Halloween, anybody who shows up to the show dressed up has a chance to be reseated in the front row," said Bernie Punt, marketing director for the Jordan Center. "We're looking for the best or most unique costume. If they're walking around or sitting down, we'll see them. There could be other surprises, too, but I can't say anything more."

It's hard to imagine John Mayer, one of the largest draws in pop music today, would need any tricks or treats to get people out to see him. On Halloween, though, Punt said things are a little different.

"We did hear some feedback from some students saying it was interfering with their Halloween plans," he said. "We talked to the band and their management, and they thought it was a great idea to encourage people to dress up. It's just a little bit of a reward for people who come out to the show."

Mayer has watched his popularity soar over the last few years with a series of huge radio hits and nonstop touring. His breakthrough album, Room For Squares, helped Mayer gain a following amongst fans of mellow, introspective pop-rock. His latest album, Heavier Things, has been no less successful, as the ubiquitous single "Bigger Than My Body" has continued to conquer the airwaves. His show at the Jordan Center will be the first in a month-long stint across the country and in Japan.

Punt cites all the things about tomorrow's show that will make it a singular event.

"It is on Halloween, and it's the tour opener, so I'd expect some pretty special songs will get played," he said. "[As with the many acts who've opened their tours at the Jordan Center], there's a good chance there'll be a song or two that show up on opening night that they don't usually play."

Teitur, the Norwegian singer-songwriter who'll open the show, is excited about the chance to play for an audience who, by and large, will be hearing his music for the first time.

"This will be my first time playing for a crowd this large," he said. "It's going to be exciting, but it's just me and my acoustic guitar, no band. I hope people will know what's going on."

Teitur, who describes his sound as "an intimate, '60s-style songwriting thing," is thrilled by the chance to play with Mayer.

"He heard my music and really likes it," Teitur said. "I think he's a good songwriter, and he seems like a cool guy."

Dave Kaye (junior-communications) said Mayer's stage show is the true indication of his talent.

"No one gives him enough credit, because all they've heard are his hits on the radio," he said. "Don't get me wrong, those songs are great, but it's when you see him live that you understand his full ability on the guitar."

Kaye said he's also excited by the prospect of a lesser-known opener for a big-name artist such as Mayer.

"I love the idea [of Teitur opening]," he said. "I think it's great that a bigger musician would give someone the opportunity to get their music out there. It's all about exposure."

Teitur, though, says it's all about the bananas.

"I'm going to be playing for a bunch of bananas," Teitur said of the costume contest. "It'd be great if I could make a banana cry. Maybe all the costumes will start getting emotional."