The Keyed Bugle, 2nd ed. By Ralph T. Dudgeon. Rowman and Littlefield, 4501 Forbes Blvd., Lanham, MD 20706; 800-462-6420; fax, 301-429-5748; www.rowman.com. 2004. 400 pp. Black-and-white photographs and illustrations, music examples, bibliography, index