His larger scale works such as sonatas, the four scherzi, the four ballades, the Fantaisie in F minor, Op.
60 have cemented a solid place within the piano repertoire, as have his shorter works: the polonaises, mazurkas, waltzes, impromptus and nocturnes.
28 (a cycle of short pieces paired in a major key/relative minor key pattern following the circle of fifths in clockwise steps).
Also, Chopin wrote numerous song settings of Polish texts, and chamber pieces including a piano trio and a cello sonata.
(Życzenie and Wojak were in fact published during Chopin's lifetime in Kyiv without opus number.)