Povzun L. Scientific and artistic aspects of creative activity of a piano-player accompanist.

The thesis represents a research of accompanist work of a piano-player as a phenomenon of ensemble creation, studied in the aspects of scientific and classification points and artistic creative understanding of the interpretation integrity and unique features of the interpretation of the author's idea. The ensemble work of an accompanist is represented as generalization of the experience of a piano-player and the interpreters of stringed plucking folk academic instruments. The concept of accompanist work is grounded and explained as a bearer of directing functions in the process of interpretation. The methods of music criticism and culture science are united and directed to a new methods (a tone idea). The creation of artistic purposefulness of the work of a piano-player accompanist is defined as the ensemble play on the base of a tone idea of the interpretation performance. This concept makes the development of the idea of the Asafiev push, the beginning of the procedure realization of the stimulus ofsounding lively music. The classification of timbre and texture features of clavier sounding in their historic and genetic condition is introduced. The original works by V. Ivko, B. Micheev, A. Biloshitskiy, V. Vlasov, V. Podgorniy, A. Tsygankov and others are analized as composed for the performance by an ensemble of a domra and a piano, which have been accepted and highly appreciated in International and National competitions, festivals, concerts, but their specific of an ensemble correlation with keyboard instruments has not been examined in music criticism. Key words: accompanist work, genesis of ensemble clavier play, keyboard timbre articulation, ensemble of piano and string plucking folk instruments.