The monograph examines the specifics of the theoretical (scientific and pedagogical-methodical) and artistic (presentational-representative creativity) understanding in the modern Ukrainian artistic space of the sound of author's music, focused on the timbre-acoustic, technical and expressive possibilities of the accordion. The materials that make up the content of the monograph reveal various aspects of musical creativity focused on the sound image of the accordion, from the standpoint of musicological understanding, which reveals and significantly enriches the researched topic.The monograph is intended for musicologists, practicing musicians, teachers and students of art educational institutions.