Part of 'The Complete Chopin - A New Critical Edition'. Chopin was a perpetual reviser, sometimes almost obsessively so. He was quite capable ofsending radically differing versions of the same piece to the various p ublishers. The unique attribute of this new edition is that it follows scrupulously a 'single best source' for each piece, so that the piece is presented exactly as Chopin would have known it at a particlar juncture.Only Chopin's own fingering, as authenticated by the sources, is indica ted. Sometimes unorthodox, these fingerings afford us a compelling insight into Chopin's own expressive intentions and performance style.