Chopin, Piano Etude in C minor, Op. 10, No. 12 'Revolutionary' (

Étude Op. 10, No. 12 in C minor, known as the Revolutionary Étude or the Étude on the Bombardment of Warsaw, is a solo piano work by Frédéric Chopin written circa 1831, and the last in his first set, Etudes Op.10, dedicated to his friend Franz Liszt. Unlike études of prior periods (works designed to emphasize and develop particular aspects of musical technique), the romantic études of composers such as Chopin and Liszt are fully developed musical concert pieces, but still continue to represent a goal of developing stronger technique.