Music and Time Annotation << Back About the evolutionof the structureof the specialty pianoconcertmaster V.V. Kalitzky The article considers the questions of evolution of definitions of professional piano concertmaster. The author notes evidence in the scientific and musical-practical space confusion in the use of these concepts. This attitude is due not only to the existing unexplained gap in the extensive research material on problems of the concertmaster art, but also insufficient attention to this issue on the part of artists, they often use the word "concertmaster", "accompanist" and their derivatives interchangeably. This fact prompted us to analyze deffinity and professional specifications concertmaster, accompanist, concertmaster-Illustrator, pianist and other related specialties pianists. The material of this study provides a new look at the problems of joint performance opens up opportunities for more detailed study of designated problems. Keywords: concertmaster art, professional defi nitions, ensemble performance. Contacts: E-mail: kalitzky@yandex.ru Pp. 19-22.