The tudes by Fr d ric Chopin are three sets of tudes (solo studies) for the piano published during the 1830s. There are twenty-seven compositions overall, comprising two separate collections of twelve, numbered Op. 10 and Op. 25, and a set of three without opus number.Chopin's tudes formed the foundation for what was then a revolutionary playing style for the piano. They are some of the most challenging and evocative pieces of all the works in concert piano repertoire. Because of this, the music remains popular and often performed in both concert and private stages.All twenty-seven tudes were published during Chopin's lifetime; Op. 10, the first group of twelve, were composed between 1829 and 1832, and were published in 1833, in France, Germany, and England. The twelve tudes of Op. 25 were composed at various times between 1832 and 1835, and were published in the same countries in 1837. The final three, part of a series called M thode des m thodes de piano compiled by Ignaz Moscheles and Fran ois-Joseph F tis, were composed in 1839, without an assigned opus number. They appeared in Germany and France in November 1840, and England in January 1841.