The relevance of the study is determined by the wide popularity of accordion in various genres and styles of American folk music, significant achievements of American accordionists in preserving and developing performing traditions in accordance with the ethnocultural specifics of a particular region of the country and presentation of creative achievements of famous American folk groups in the world music space, as well as by lack of the studies on this issue in the field of musicology in Ukraine.
 The aim of the study is to define the genre and style priorities of accordion performance in the traditional common culture of Americans, highlight the regional specifics of styles and genres of American folk music, in the reproduction of which the accordion is directly involved, as well as describe textural, articulatory and picking, metric and rhythmic features of playing the instrument.
 The methodology. The methodological basis of the study is the interaction of scientific approaches, among which an important place is occupied by historical, cultural, systemic, structural and functional, musicological methods.
 The results. In the traditional common culture of Americans, the performance on the accordion is presented quite diversely in terms of the instruments, distribution areas, genre, and style palette of music performed. Historical, sociocultural and geopolitical factors, ethnocultural influences, multicultural tendencies determined the regional specificity of the instruments. The Cajun accordion, the diatonic button accordion, and the chromatic piano accordion have gained considerable popularity in the traditional common culture of various regions of the United States. Each of them took leading positions in the reproduction of a certain musical style: Cajun accordion — Cajun and Zydeco, diatonic button accordion — Cojunto, chromatic piano accordion — Zydeco. The button (diatonic or chromatic) and piano accordions were mainly used in the instrumental composition of dance music groups, in particular in the genre of polka, depending on the region with the corresponding ethnic specificity. The accordion performance vividly embodies the genre and style features of American folk music in the context of its historical dynamics and capability of artistic expression, including intonation expressiveness and characteristic techniques of playing, inherent in a certain design model of the instrument.
 The topicality of the study is to reproduce the genre and style specifics of accordion performance in the traditional common culture of Americans.
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