The Contemporary A Cappella Society (CASA) is a nonprofit organization dedicated to promoting and supporting the art of a cappella music. Founded in 1995, CASA provides resources, education, and networking opportunities for singers, groups, and enthusiasts. The organization aims to foster a vibrant community around contemporary a cappella, which includes various styles and genres. CASA hosts events such as the annual A Cappella Summit and the CARAs (Contemporary A Cappella Recording Awards), recognizing outstanding achievements in the field. The society also offers educational materials and workshops to help groups improve their skills and connect with others who share a passion for a cappella music.