Concert-goers at tomorrow's Cloverleaf show at the State Theatre will be treated to two delights.

One is a chance to hear songs from the band's new CD, Spectrum. The other, band member T.J. Cornwall said, is a surprise.

"Make sure to stay for the whole show because there will be an awesome treat for everybody at the end which pretty much everyone likes," said vocalist and pianist Cornwall, who would not release the nature of the surprise.

Cornwall and the rest of the piano-driven pop rock quartet, made up of students at Penn State, will headline the Cloverleaf CD Release Show, which begins at 8 p.m. at the State Theatre, 130 W. College Ave.

"We're really excited about our first professionally sounding CD, Spectrum," Cornwall said.

According to Cloverleaf's Myspace.com page, the band spent seven months working on songs before it arrived at Dragonfly Studios in Haymarket, Va., to cut a CD.

Cloverleaf drummer Garrett Bogden said when the band members finished recording, they had about 15 songs to choose from, five of which made it onto the $5 CD. Prospective fans can sample two of the tracks on the band's MySpace page.

Cornwall said the band's creative process is two-fold and collaborative.

"I basically write all the music first and just hum where the lyrics would be," Cornwall said. "If everybody likes it, then we write the lyrics."

This won't be the first time Cloverleaf has rocked out at the State Theatre.

"Cloverleaf played here last year with the Clarks," said Kristy Cyone, marketing and sales manager of the State Theatre. "I was able to catch their act and they were fantastic, a different kind of rock but with a familiar type of vibe. It's not cookie-cutter rock."

The members of Cloverleaf hail from Pittsburgh, and they've been a band together for about three years, Bogden said. They've shared the stage with such artists as Yellowcard, Hanson and OneRepublic.

Along with Cloverleaf, the show will feature North of Nittany and Nick Stumpo.

North of Nittany brings energy to the stage because of its sense of humor and chemistry with the crowd, Cornwall said. That kind of fun mentality, Cornwall added, is missing in today's music.

"We like to have fun and we're really stoked about this show," said Pat Breen, guitarist and singer for North of Nittany. "We're a jam band and we're currently in the middle of a creative streak."

Stumpo will offer a solo acoustic set.

"I'll probably be doing one original song and some covers of Dave Matthews, David Gray and Martin Sexton," Stumpo said.

He said he's also in a band called The Other Brothers, and added that when he plays solo his style is different than when he plays with his band.

"I'm excited to play in the State Theatre," Stumpo said. "North of Nittany has some good jam-based stuff, and Cloverleaf has a really energetic up-tempo."