ChopinÂ's piano works are of such uniformly high quality that they are all absolutely essential in the repertoire of any aspiring pianist. The Preludes and Etudes are exquisitely beautiful examples of his genius. Numbering 52 pieces in all, they are reproduced here from the authoritative Mikuli edition and are available for the first time in a low-priced, one-volume publication. The opus listings are: 25 PreludesÂ--Op. 28, Nos. 1Â-24; Prelude in C-sharp Minor, Op. 45. 27 EtudesÂ--Op. 10, Nos. 1Â-12; Op. 25, Nos. 1Â-12; and Trois Nouvelles Etudes Unabridged (1998) republication of works from an authoritative early edition. New unified table of contents.