30 mins. [Canada]: National Film Board of Canada. Koenig, Wolf, and Roman Kroitor (prod./dir.). 1959b. Glenn Gould: On the Record. Film, 30 mins. [Canada]: National Film Board of Canada. Mozart, Wolfgang Amadeus. 1953. Concerto No. 24 in C Minor for Piano, edited by Franz Kullak. New York: G. Schirmer. Nachmanovitch, Stephen. 1990. Free Play: Improvisation in Life and Art. Los Angeles: J. P. Tarcher; New York: Distributed by St. Martin's Press. (cloth); (pbk); New York: G.P. Putnam's Sons. . Paras, Jason. 1986. The Music for Viola Bastarda, edited by George Houle and Glenna Houle. Music—Scholarship and Performance. Bloomington: Indiana University Press. Polk, Keith. 1966. Flemish Wind Bands in the Late Middle Ages: A Study of Improvisatory Instrumental Practices". PhD dissertation. Berkeley: University of California. R., Ken (2012). Dog Ear: Tritone Substitution for Jazz Guitar. Amazon Digital Services, Schopenhauer, Arthur. 1958. The World as Will and Representation. Translated from the German by E. F. J. Payne, 2 vols. [Indian Hills, Colorado]: Falcon's Wing Press. Sancho-Velazquez, Angeles. 2005. The Legacy of Genius: Improvisation, Romantic Imagination, and the Western Musical Canon, PhD dissertation, University of California, Los Angeles. Solis, Gabriel, and Bruno Nettl (eds.). 2009. Musical Improvisation: Art, Education, and Society. Champaign: University of Illinois Press. (cloth) (pbk) Thiollet, Jean-Pierre. 2017. Improvisation so piano''. Paris: Neva Editions. External links Robert Levin on Improvisation in Classical Music Losing Control: Indeterminacy and Improvisation in Music Since 1950 by Sabine Feisst Improvisation on Improvisation: Karlheinz Essl and Jack Hauser talking about musical improvisation with computers How to Improvise Jazz Melodies, by Bob Keller A Jazz Improvisation Primer by Marc Sabatella Information about jazz improvisation A Fickle Sonance A column about improvisation by Art Lange Approaches to Improvisation Tutorial on music improvisation techniques Musical performance techniques Jazz techniques