Processos rítmicos do século XX no piano popular: timelines, defasagem rítmica & live looping

Abstract

The object of study in this paper is about applications for popular piano that blend elements taken from the Rhythmic Series by José Eduardo Gramani and rhythmic phase-shifting processes developed by Steve Reich, Michael Udow and Cesar Traldi by live looping techniques using live electronics. As a base, theoretical and epistemological approximations between authors involved with methodologies and rhythmic processes of the 20th century were brought up to lay the foundations for the offer of a new propaedeutic of the application of timelines and ostinatos taken from those Rhythmic Series. Laboratories were conducted with a live looping workflow in the DAW Reaper to manage the sound material, submitting timelines taken from the Series to phase-shifting by rhythmic additive process – addition/subtraction, thus laying a comping base for popular piano idiomatic improvisation. Specialized methodology from Arts Based Research was adopted, such as the creation and performance of an audiovisual artistic product and its analysis, autoethnography and tangency with Patrik Proško’s anamorphic visual art. Visual tools were used for the analysis of the pieces generated in laboratory, such as Sonic Visualiser and MIDI take graphics. Finally, it has been considered that it is possible to apply the Rhythmic Series of Gramani and phase-shifting, going beyond, revealing a rhythmic aspect that became a catalyst element of harmony and melody, generating harmonic anamorphism. The innovative factor in this work lies in the combination of rhythmic concepts and live looping techniques, engendering a new artistic construct.