TY CONF TI MASTERING THE PIANO COMPOSITIONS OF N.K. MEDTNER AS A NECESSARY COMPONENT OF THE PROFESSIONAL TRAINING OF A MUSIC TEACHER KW works of N.K. Medtner KW philosophical and aesthetic views KW piano class KW students KW cultural approach KW comprehensive teaching method KW pedagogical leadership KW mastering piano style KW students JO Scientific research of the SCO countries: synergy and integration AU Krasovskaya, E.P. PY 2024 PB AUS PUBLISHERS