“Our mission is to share barbershop and keep that type of music going,” says Dana Skoog, who’s been a chorus member for thirteen years. “We always enjoy what we’re doing and make it fun.” The Big Sky Chorus will perform on December 7 at the Billings Public Library at 11:00 a.m. and provide a free concert for the public on December 8 at 3:00 p.m. at St. Patrick’s Cathedral.