Étude Op. 10, No. 12

Also known as Étude in C Minor, Op. 10, No. 12, Revolutionary Étude, Étude in C minor, op. 10 no. 12 “Revolutionary”: Allegro con fuoco, Etude for piano No. 12 in C minor ("Revolutionary"), Op. 10/12, CT. 25, Etudes, piano, op. 10. No. 12, Revolutionary, Etiuda rewolucyjna, "Revolutionary" study"

étude written by Chopin