The Preludes and Etudes are exquisitely beautiful examples of his genius. Features 52 pieces in all, including 25 Preludes -- Op. 28, Nos. 1-24; Prelude in C-sharp Minor, Op. 45. 27 Etudes -- Op. 10, Nos. 1-12; Op. 25, Nos. 1-12; and Trois Nouvelles Etudes.