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In jazz, a contrafact is a musical composition consisting of a new melody overlaid on a familiar harmonic structure. Contrafact can also be explained as the use of borrowed chord progressions.〔"The Uses of Existing Music: Musical Borrowing as a Field". J. Peter Burkholder. Notes, Second Series, Vol. 50, No. 3 (Mar., 1994), pp. 851-870. Published by: Music Library Association.〕 As a compositional device, it was of particular importance in the 1940s development of bop, since it allowed jazz musicians to create new pieces for performance and recording on which they could immediately improvise, without having to seek permission or pay publisher fees for copyrighted materials (while melodies can be copyrighted, the underlying harmonic structure cannot be). Contrafacts are not to be confused with musical quotations, which comprise borrowing rhythms or melodic figures from an existing composition. In classical music, contrafacts have been used as early as the parody mass and In Nomine of the 16th century. More recently, "Cheap Imitation" (1969) by John Cage was produced by systematically changing notes from the melody line of "Socrate" by Erik Satie using chance procedures. In spite of its usefulness, the term "contrafact" has not won wide acceptance in Western classical theory. == Examples == Well-known examples of contrafacts include the Charlie Parker/Miles Davis bop tune "Donna Lee," which uses the chord changes of the standard "Back Home Again in Indiana" or Thelonious Monk's jazz standard〔Yanow, Scott (2008). ("Thelonious Monk" biography ), ''AllMusic''.〕 "Evidence", which borrows the chord progression from Jesse Greer and Raymond Klages's song "Just You, Just Me" (1929). The Gershwin tune "I Got Rhythm" has proved especially amenable to contrafactual recomposition: the popularity of its "rhythm changes" is second only to that of the 12-bar blues as a basic harmonic structure used by jazz composers. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「contrafact」の詳細全文を読む スポンサード リンク
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