G-flat major Rondo-Finale of his Seventh Symphony. Mahler's Tenth Symphony was composed in the enharmonic key of F-sharp major. This key is more often found in piano music, as the use of all five black keys allows an easier conformity to the player's hands, despite the numerous flats. Austrian composer Franz Schubert chose this key for his third impromptu from his first collection of impromptus (1827). Polish composer Frédéric Chopin wrote two études in the key of G-flat major: Étude Op. 10, No. 5 "Black Key" and Étude Op. 25, No. 9 "Butterfly". French composer Claude Debussy used this key for one
Prelude in E-flat major (Rachmaninoff) the preludes written by Rachmaninoff. These works are available on various types of media. Many others recorded outstanding interpretations of the preludes, including Nikolai Lugansky and Van Cliburn. Prelude in E-flat major (Rachmaninoff) The Prelude in E-flat Major, Op. 23, No. 6 is a 1903 composition by Sergei Rachmaninoff. It is part of Rachmaninoff's Ten Preludes, Op. 23. The E-flat major Prelude is written in a variation form. An extended sixteenth note accompaniment is offset by a three note reoccurring melodic germ in the right hand. The prelude is a serially reoccurring set of repetitions and variations. Measures 1–9 establish