Society, American Federation Music.; Member editorial board Neue Bach-Ausgabe, 1962-1979.
Teacher, Dalcroze School Music and Diller-Quaile School Music, New York City, 1938-1950. Literature editor G. Schirmer, Inc., 1930-1938. Music critic Nation, 1930-1933.
Editor American Musicological Society, 1941-1944. Editor Association Music Publications, Inc., 1941-1946. Professor music Princeton, 1952-1973, department chairman music, 1952-1967, Henry Putnam university professor, 1969-1973.
Lecturer Columbia, 1949, University of California, 1951. Conductor Cantata Singers, small chorus specializing in 17th and 18th century music, New York City, 1936-1953. Guggenheim fellow, 1949-1950.
American Council Learned Socs. fellow, 1962-1963. Senior fellow National Foundation Arts and Humanities, 1968. Recipient Medal of Honor, Handel and Haydn Society, 1979.
Author: Studies in the History of Musical Pitch (with A.J. Ellis), 1969. Contributor numerous articles to music journals Editor: The Bach Reader (with Hans T. David), 2d edition., 1966. J.S. Bach Cantata 174, 1962-1963, Passion According to St. John, 1973.
Kritischer Bericht, 1974. Other choral works. Translator: Paul Hindemith’s Craft of Musical Composition, Theoretical Part 1942, other books.