Olga Kern Lesson – Rachmaninov Piano Sonata No 2 Op 36 in Bb minor 2nd movement Olga Kern オルガ・カーン 2018.09.162018.09.15Olga Kern Lesson – Rachmaninov Piano Sonata No 2 Op 36 in Bb minor 2nd movement[adrotate group=”5″]