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
Service in B-flat major, Op. 10 (Stanford) Service in B-flat major, Op. 10 (Stanford) Service in B-flat major, Op. 10, (full title Morning, Evening and Communion Service in B-flat) is a collection of Anglican church music by Charles Villiers Stanford for mixed choir and organ containing the Canticles for each of the principal services of the Anglican Church. Stanford set the traditional liturgical texts in English in 1879 when he was the organist of Trinity College, Cambridge. They were published by Novello in 1902. Stanford orchestrated the work in 1903, with additional organ. In 1877, Charles Villiers Stanford, returning from extended studies in Leipzig and Berlin, was