For 10 points, name this composer of the Revolutionary Etude, a Polish composer and piano virtuoso.
This composer used 6/8 time for the final three of four works in a genre that he invented, which contains a distinguishing feature called a "mirror reprise." His opuses 9, 15, and 37, among others, exemplify a genre that was invented by John Field. A repeating A flat in his Opus 28, No. 15 led to a popular nickname. Has von Bulow gave a nickname to each of the 24 pieces that comprise this man's Opus 28, one of which is the "Raindrop" prelude. This composer, who invented the ballade form, also wrote a piece that gained its nickname from the November Uprising. For 10 points, name this composer of the Revolutionary Etude, a Polish composer and piano virtuoso.
This composer used 6/8 time for the final three of four works in a genre that he invented, which contains a distinguishing feature called a "mirror reprise."
Frederic Francois Chopin [or Fryderyk Franciszek Chopin]