Chopin’s Prelude No. 16 in B-Flat Minor, Presto con fuoco, is certainly the most difficult of the set. Chopin’s 24 Preludes Op. 28, are a set of short pieces for the piano, one in each of the twenty-four keys, originally published in 1839. Frédéric Chopin wrote them between 1835 and 1839, partly at Valldemossa, Majorca, where he spent the winter of 1838–39 and where he had fled with George Sand and her children to escape the damp Paris weather. In Majorca, Chopin had a copy of Johann Sebastian Bach’s The Well-Tempered Clavier, and as in each of Bach’s two sets of preludes and fugues, his Op. 28 set comprises a complete cycle of the major and minor keys, albeit with a different ordering. – Yuja Wang
Chopin by Wang
Prelude No. 24
Prelude No. 24 in D Minor
Prelude No. 4
Prelude No. 4 in E Minor
Concerto No. 2
Piano Concerto No. 2 in F Minor