Sonorism in Compositions by Soviet Composers for Non-Register Button Accordion

The object of the research is the works of Soviet composers for the non-register bayan (non-register accordion). The subject of the research is the sonorous technique. The aim of the study is to examine the specific application of sonorism in the works of Soviet composers for the non-register bayan. The author identifies the types of sonorous soundings and the ways they are formed; considering their textural, dramatic, and depictive significance. The materials of the article can be used for the professional activities of bayanists and composers, and can be included in the courses. The methodological basis of the research includes a comprehensive approach, which incorporates scientific methods of induction and deduction, typology, comparative, structural, systemic, and historical approaches. The scientific novelty of the research lies in the fact that the sonorism in compositions for the non-register bayan is specifically explored for the first time. As a result of analyzing works of Soviet composers for the non-register bayan (original compositions, arrangements of folk melodies, adaptations), the author of the article concludes that sonorous technique is not frequently used in them, and the sonorous soundings employed (lines, spots, and stripes) are generally consist of a small number of sounds and brief. Nevertheless, by selecting the representative examples from the works of the renowned Soviet composers to illustrate, the author of the article demonstrates that sonorous soundings are employed in crucial dramatic moments, serve various depictive functions, and provide a background for the melodically leading voices. Identified applications of sonorous technique in works of Soviet composers for the non-register bayan represent a preparatory evolutionary stage leading to the "flourishing" of sonorism in music for the cassotto-сonverter instrument in the second half of the 20th century and the first half of the 21st century.

non-register bayan, cassotto-converter bayan, music for bayan, Soviet composers, sonorism, sonorant texture, cluster, sonor functions, evolution of bayan sonorika, musical depictiveness