Explore CHOPIN: Cello Sonata / Polonaise Brillante, Op. 3 / Grand Duo by Gregor Piatigorsky, released on . A 10-track album featuring 'Nocturne No. 20 In C Sharp Minor, Op. Posth. (Arr. G. Piatigorsky): Nocturne No. 20 In C Sharp Minor, Op. Post., Bi 49'. Get detailed streaming statistics, track-by-track analysis, and listener engagement metrics.