The Piano Variations of Aaron Copland: An Analysis and Study for the Performer. - UNT Digital Library
A Stylistic Comparison of Aaron Copland's Passacaglia, Piano variations, and Four piano Blues: A Lecture Recital, Together with Three Recitals of Selected Works of Beethoven, Brahms, Chopin and Others - UNT Digital
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Copland, William Masselos - Copland: Piano Fantasy and Piano Variations Performed By William Masselos - Amazon.com Music
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