With the knowledge he had gained from his studies in Paris, Copland came into demand as a lecturer and writer on contemporary European classical music. From 1927 to 1930 and 1935 to 1938, he taught classes at The New School for Social Research in New York City. Eventually, his New School lectures would appear in the form of two books—"What to Listen for in Music" (1937, revised 1957) and "Our New Music" (1940, revised 1968 and retitled "The New Music: 1900–1960"). During this period, Copland also wrote regularly for "The New York Times", "The Musical Quarterly" and a number of other journals. These articles would appear in 1969 as the book "Copland on Music".