For Stefan Wolpe (1959) di Tony Scott e Bill Evans

The essay is divided into three parts mutually interrelated: two methodological sections and the central one of purely analytical nature. Preliminarily, the improvisational event has been transcribed through a retrospective score based on a transcription protocol (by software video-notation) in absolute durations, expressly elaborated by the author. On this basis, the musical analysis was conducted, aimed at detecting not only the intrinsic constructive aspects, but also the links between the formative criteria dependent on the compositional processes of the 20th century Western learned tradition and the audiotactile attitudes of the two musicians. The analytical part is preceded and followed by two sections: the first one, concerning the criteria of the analysis of improvisation without a structured referent, that is created without pre-composed trace (free jazz), and the second one concerning the problems of the jazz analysis in itself.

Keywords: Free jazz, analysis; improvisation; audiotactile; transcription.