. . . . "12 p'es srednej trudnosti = 12 pieces of moderate difficulty (1878, op. 040). Chanson triste, piano, CS 137 128048 132049 132195 132198 132312 179593 4429 63129 CAJKOVSKIJ, PËTR |f [componist]" . "132312" . "132198" . "132195" . "63129" . "CAJKOVSKIJ, PËTR |f [componist]" . . . "179593" . . "132049" . "12 p'es srednej trudnosti = 12 pieces of moderate difficulty (1878, op. 040). Chanson triste, piano, CS 137" . "4429" . "128048" . "12 p'es srednej trudnosti = 12 pieces of moderate difficulty (1878, op. 040). Chanson triste, piano, CS 137" . "63129" . . . .