Author, with Felix Salzer, of Counterpoint in Composition and, with Edward Aldwell, of Harmony and Voice Leading. Numerous articles on theory and analysis; lectures and classes throughout North America and Europe. Visiting professorships at Hunter College, State University of New York at Binghamton, Harvard University, and Ecole normale supérieure de jeunes filles (Paris). Professor of music, Queens College and CUNY Graduate School, 1972-93; Distinguished Professor, 1993-96. Faculty, The Juilliard School, since 1998. Mannes College The New School for Music: faculty, Techniques of Music Department, since 1956; chair, Theory Department, 1958-62; dean of college, 1962-66; chair, Techniques of Music Department, 1966-73.