1. CHORAL MUSIC BY SAMUEL BARBER: GENRE AND STYLE ASPECTS. Authors: OLENA ANTONOVA, OLEKSANDR ZHARKOV, TETIANA FILATOVA, TYMUR IVANNIKOV, VALERIYA ZHARKOVA.2. SPECIFIC SOUND PRODUCTION TECHNIQUES IN ACADEMIC GUITAR MUSIC. Authors: TYMUR IVANNIKOV, TETIANA FILATOVA.3. SPECIFIC SOUND PRODUCTION TECHNIQUES IN ACADEMIC GUITAR MUSIC. Authors: TYMUR IVANNIKOV, TETIANA FILATOVA.