This weekend, the Pennharmonics will look to old songs for new inspiration.

The 15th annual Shamrockappella concert will see the group perform some classic hits in a cappella style. The performance will take place 6 p.m. Saturday in 105 Forum. There will be about 10 to 12 a cappella songs performed, six of which are new.

"This is our first big event of the year," said Meghan Curry, director of the Pennharmonics. "We have two new members, and we all get dressed up and wear green and black."

Many of the Pennharmonics' songs tend to be recent pop hits, but this year there is a noticeable shift toward older tunes.

Alan Wiggins, a new member of the Pennharmonics, will be leading "Don't Stop Believin'." Derek Pae, a member since 2005, will lead "Somebody to Love" by Queen.

"We're really excited about 'Somebody to Love' because it's an awesome, big, epic arrangement since Queen is more choral-based," Curry said. "We're also going to be doing 'Good Vibrations' by the Beach Boys. We're really going out of our comfort zone this year."

The group isn't completely abandoning newer material, though. Nicole Tureski will sing the lyrics for "Girlfriend" by Avril Lavigne.

"Every member has their own

style," Tureski said. "I like to try and stay true to the artist's original sound."

The Pennharmonics was originally founded in 1993 as a trial summer group. Fifteen years later, the organization has grown to become one of Penn State's most recognized independent co-ed a cappella groups.

"The members of the Pennharmonics are really talented, crazy, fun people who are as close as family," said Mallory Moran, public relations manager for the Pennharmonics.

In November, the group released a studio disc, Acappocalypse, which features covers of well-known songs. One song, "Chagrin," has been nominated as the "Best Scholastic Original" for the 2008 Contemporary A Cappella Recording Awards.

"We're the only a cappella group at Penn State that has a professionally produced studio disc, so we've got a lot to be proud of," Moran said. "Acappocalypse is taking the next step for a cappella at Penn State, so it's a really big deal."

While the Shamrockappella concert has often been a benefit show in the past, this year the proceeds will go toward recouping the expenses associated with producing the album, Curry said.

The disc can be purchased at thepennharmonics.com and features songs like "Jumpin' Jumpin' " by Destiny's Child, which the singers said was a standout.

"We all did our own spin on the song. We just had a lot of fun with it," Tureski said.

Curry said anyone who is remotely a fan of the Pennharmonics would recognize the style of music and songs on the disc.

"We've been working on it all year, so it's kind of like our baby," she said.