«The first school of polyphony» by V. Bryzgalin is the first work written for bajan and accordion players which contains the detailed system of consecutive study of polyphony: from simple examples to a complete mastery and has no analogues among the world pedagogical-musical literature.«The School» consists of «Young Musician's Dictionary of Polyphony» and 3 exercise-books (parts), published separately, but constituting one whole thing.Being originally organized «The School» is therefore not only a manual which answer the repertoire requirements of schools, concerts and festivals, but is also a theoretical supply containing vast knowledge in polyphonic study.