Robert P. Morgan is Professor Emeritus of Music at Yale University. Active as both a theorist and historian, his book Twentieth-Century Music (1991) has been a standard text for over twenty years. He has published numerous other books as editor, including Alban Berg: Historical and Analytical Perspectives (1991), Modern Times (1993) and Hearing and Knowing Music: The Unpublished Essays of Edward T. Cone (2009). He has served as Chair of the Music Departments at both the University of Chicago and Yale University and was a recipient of grants from the German Government and the National Endowment...