For more than two years, a group of nearly 30 volunteers has been celebrating the cultural diversity of Gainesville by broadcasting its voices throughout the area. TEAM ARTS of North Georgia, a network of teaching artists looking to blend community-based instruction with school curriculums, has teamed with Brenau University to create a weekly public radio broadcast — Celebrations: Arts Alive. The show, which airs every Saturday from 8-9 a.m., tackles a theme each week, including Kwanzaa, Hispanic Heritage Month and Native American storytelling.