Piazzolla, Ástor. (1921–1992) Important Collection of Copyist Manuscripts of Unpublished 1958 ArrangementsAn important collection of previously unknown and unpublished works by the Argentine tango composer and bandonen player who revolutionized the traditional tango into a new style termed 'nuevo tango', incorporating elements from jazz and classical music. These five sets of arrangements for voice and small band are in the hand of pianist and copyist Carlos Rausch, friend and frequent collaborator of the composer during his time in New York City, 1958