Tatyana Sergeevna Bershadskaya - an outstanding Soviet and Russian musicologist, professor at the St. Petersburg State Conservatory named after N. A. Rimsky-Korsakov, Doctor of Arts, Honored Artist of Russia, holder of the Order of Friendship for many years of fruitful work in the field of culture and art, author of a number of monographs and scientific articles. This textbook (the first edition was published in 1961) is devoted to the problems of musical form, polyphony, fret, intonation features and warehouses of Russian folk song.