The a cappella group, Rockapella, plans a return concert April 29 at Fairfield University's Quick Center for the Arts.

The show gets under way at 8 p.m. with an opening performance by Close Harmony, the Fairfield Ludlowe High School a cappella group under the direction of Kevin Cotellese.

Rockapella, which recently released a studio album, "Bang," is a vocal quintet that gained attention in its debut on the PBS television program for children, "Where in the World is Carmen Sandiego?"

The grou's repertoire spans vintage Mills Brothers' songs through jazz and rock to hip-hop.

The current Rockapella ensemble features Scott Leonard (since 1991, high tenor), Jeff Thacher (1993, vocal percussionist), George Baldi III (2002, bass), John K. Brown (2004, tenor) and Steven Dorian (2010, tenor).

"People have a hard time believing it's just us making all of that music. It's still those same elements that make modern band music: percussion, bass, melody and harmonies," Leonard said in publicity for the concert.

With no instruments or tracks, "We're making every bit as much music as the whole `Glee' chorus -- but with only five guys," Thacher said. "People often ask me if it hurts." Thacher, a graduate of the Berklee School of Music, is also a producer for other artists. "It doesn't exactly look pretty, but the ends justify the means."

Tickets for the Rockapella concert are $40, $35 and $30. They can be purchased at www.quickcenter.com or by calling the Quick Center box office at 203-254-4010, toll-free at 1-877-ARTS-396.