The Contemporary A Cappella Society of America (CASA) created the Urban Harmony Movement to bring music, via free materials, coaching, and concerts to public high schools in need. For more information call (415) 563-5224. In the mean time buy and listen to another outstanding compilation of 16 tracks sung by both well known groups and four of the best college a cappella groups, with whom CASA is uniquely connected. Other notable contributors are The House Jacks, Five Live, The Persuasions, Bobby McFerrin, Vox One, The Nylons and M-Pact.