Source: The Romantic Generation (1995), Ch. 6 : Chopin: Virtuosity Transformed
“Some of the Etudes in the first set, opus 10, were written by the time Chopin was twenty. It is with these pieces that Chopin's style was fully revealed in all its power and subtlety. Later works are sometimes more ambitious and, in a few cases, more audacious, but there were no radical changes of style, nothing to compare to the later revolutions we find in the careers of Haydn and Beethoven, or even in the shorter lives of Mozart and Schubert. Chopin's mastery was proven with the twelve Etudes of opus 10.”
Source: The Romantic Generation (1995), Ch. 6 : Chopin: Virtuosity Transformed
Help us to complete the source, original and additional information
Charles Rosen 69
American pianist and writer on music 1927–2012Related quotes
Source: The Romantic Generation (1995), Ch. 6 : Chopin: Virtuosity Transformed
Part II. The Classical Style. 1. The Coherence of the Musical Language
Classical Style: Haydn, Mozart, Beethoven (Expanded edition, 1997)

Without this you can’t play Chopin, you can’t play Mozart, and lastly absolutely not the Goldbergs.
Talkings on Bach
Source: The Romantic Generation (1995), Ch. 7 : Chopin: From the Miniature Genre to the Sublime Style
Source: The Romantic Generation (1995), Ch. 6 : Chopin: Virtuosity Transformed