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
Minor scale sharp or flat represents a major (or perfect) interval. A number with a flat represents a minor interval. In this example, the numbers mean: Thus, for instance, the A natural minor scale can be built by lowering the 3rd, 6th, and 7th degrees of the A major scale by one semitone: \override Score.TimeSignature #'stencil = ##f \relative c' { </score> Because of this, the key of A minor is called the "parallel minor" of A major. The intervals between the notes of a natural minor scale follow the sequence below: where "whole" stands for a whole tone (a red u-shaped