The Piano Variations of American composer Aaron Copland were written for piano solo from January to October 1930. They were dedicated to American writer and literary critic (c. 1904–1984), and were originally published in 1932 by Cos Cob Press, which merged with Arrow Music Press in 1938 and was taken over by Boosey & Hawkes in 1956. The approximate performance time is 11 minutes. (en)
Rapp, Patricia Ann. 1949. "Contemporary American Piano Music". MA thesis. Madison: University of Wisconsin–Madison. (en)
Johnson, Lawrence. 2005. "Copland Piano Fantasy; Piano Sonata; Piano Variations: Fiery Performances in a Bargain Set of Three Notable Copland Works". Gramophone . (en)
Anon. 1984. "Gerald Sykes, 80, Dies; Was Author and Critic". The New York Times . (en)
Copland, Aaron. A Reader: Selected Writings 1923–1972, new edition. Edited, with an introduction, by Richard Kostelanetz. Asst. editor Steve Silverstein. New York: Routledge, 2004. . (en)
Oja, Carol J. 2000. Making Music Modern: New York in the 1920s. Oxford and New York: Oxford University Press. . (en)
Soares, Janet Mansfield. 1992. Louis Horst: Musician in a Dancer's World. Durham: Duke University Press. . (en)
Perlis, Vivian. 2002. "Aaron Copland and John Kirkpatrick: 'Dear John, Can You Help Me Out?'". In Copland Connotations: Studies and Interviews, edited by Peter Dickinson, foreword by H. Wiley Hitchcock, 57–65. Woodbridge, Suffolk, and Rochester, New York: The Boydell Press. . (en)
Pollack, Howard. Aaron Copland: The Life and Work of an Uncommon Man. New York: Henry Holt and Company, 1999. ; Urbana: University of Illinois Press. . (en)
Butterworth, Neil. The Music of Aaron Copland. London: Toccata Press; New York: Universe Books, 1985. . (en)
Greenfield, Edward, Ivan March, Robert Layton. 1996. The Penguin Guide to Compact Discs Yearbook, 1995/6. Penguin Handbooks. London and New York: Penguin Books. (en)
Sales, Grover, and Michael Steinberg. 2001. "Finding an American Sound: Two Contemporaries: Duke Ellington, Aaron Copland". In American Mavericks: Musical Visionaries, Pioneers, Iconoclasts, edited by Susan Key and Larry Rothe 36–49. San Francisco: San Francisco Symphony; Berkeley and Los Angeles: University of California Press. ; . (en)
The Piano Variations of American composer Aaron Copland were written for piano solo from January to October 1930. They were dedicated to American writer and literary critic (c. 1904–1984), and were originally published in 1932 by Cos Cob Press, which merged with Arrow Music Press in 1938 and was taken over by Boosey & Hawkes in 1956. The approximate performance time is 11 minutes. (en)