The Central College A Cappella Choir is performing its annual ROCK-A-PELLA concert, a fundraising variety show, on Friday. The concert, under the direction of Associate Professor of Music Mark Babcock, is a one-hour program that includes auditioned music, drama and comic entertainment from members of the choir. The event concludes with music selections from the choir’s Brazilian tour May 14-25. Audience members can vote for their favorite acts with money placed in decorated boxes in Douwstra Auditorium. All funds will be used toward the choir’s trip to Brazil. ROCK-A-PELLA is set to begin at 7 p.m. in Douwstra Auditorium. The event is free and open to the public