casa,org/sing_cd Sing was created to showcase a slice of the best of contemporary a cappella to both the existing vocal music establishment and the a cappella virgin masses. The purpose of the compilation is to give talented groups and individuals an opportunity to be heard on a worldwide stage by placing their music alongside some of the biggest names in the a cappella universe. Our 10th release lights up the night with innovative and emotionally charged music from around the world. You'll be overwhelmed by the level of talent on display. We are neon.