The article analyzes the question of the peculiarities of concertmaster activity of future teachers of music art in the process of learning in the class of accompaniment and improvisation and in further practical activities. The author identifies the constituent structural elements in the training of pianist-accompanist in higher educational institutions of art, which is manifested in various aspects of the activities of future professionals. The field of activity for a musician-performer is concertmaster's work, which by its specificity requires from the specialist not only the possession of traditional performing skills, but also a whole set of personal qualities and the ability to work creatively with musical material. It should be noted that in the concertmaster class due to its specificity is the concentration and systematization of knowledge and skills acquired by students in piano, accordion, accordion, conducting, solo singing and music theory (N. Borisov, D. Gostev, T. Glyadkovskaya, M. Moiseeva, F. Khalilova and others.). This is especially evident in singing to one's own accompaniment and selection by ear, where the narrow professional skills acquired in various specialties are concentrated in one direction - the embodiment of the artistic image of a musical work. Such a variety of tasks requires a comprehensive improvement of the theory and technology of concertmaster activity. Сoncertmaster class is one of the performing disciplines that is important for the general professional training of music teachers. In the concertmaster's class, students' musical and performance activities are studying a wide range of vocal, instrumental, children's music literature, accompanied by a soloist-vocalist or instrumentalist, playing in an ensemble, singing to their own accompaniment, reading from a letter, transposing, listening. The concertmaster class in the structure of professional training of a musician-pianist is an important subject of a special cycle, along with other disciplines, is responsible for the holistic training of a specialist, provides a basis for work in the field of ensemble activities. The tasks of the concertmaster class in music education are to form and improve performance skills and abilities designed for the professional work of a pianist with soloists. Modernity requires the training of competent concertmasters with high performance potential, developed artistic and organizational qualities, possessing the means of artistic processing of musical material, accustomed to work in the stage.