1. RATIONAL AND EMOTIONAL FACTORS OF MUSIC AND PERFORMANCE AESTHETICS. Authors: VІTALІI ZAIETS, OKSANA ZAIETS.2. MODIFYING PROCESSUALITY OF EMOTIONS OF A MUSICIAN-PERFORMER. Authors: OKSANA ZAIETS, VІTALІI ZAIETS.3. PERFORMANCE STYLE AS COMPREHENSIVE ARTISTIC METHOD IN THE FIELD OF MUSIC. Authors: VІTALІI ZAIETS.