Six duets, op. 11 for piano 4 hands 6 duets op. 11 for piano four hands 1-6. 6 duets op. 11 for piano four hands Six duets, op. 11 for piano 4 hands / Serge Rachmaninov Sonata in D major, op. 6 : for piano, 4 hands Waltzes op.39 for piano four hands 50 Russian folksongs for piano 4 hands Sonata for piano,4 hands Chinese sights and sound version for piano 4 hands