The Garland encyclopedia of world music / advisory editors, Bruno Nettl and Ruth M. Stone ; founding editors, James Porter and Timothy Rice. Excellent 10 volume set, with accompanying CDs. World music : the rough guide / edited by Simon Broughton, Mark Ellingham and Richard Trillo, with Orla Duane and Vanessa Dowell. Discusses the traditional as well as current popular musics; includes discographies. Grove music online. Good general world coverage; contains maps, musical examples and bibliographies. American musical traditions / Five volumes containing maps, illustrations, a glossary, bibliographies and discographies