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
Flat (music) Flat (music) In music, flat or bemolle (Italian: "soft B") means "lower in pitch". More specifically, in musical notation, flat means "lower in pitch by one semitone (half step)". Flat is the opposite of sharp, which is a raising of pitch. In music notation, the flat symbol, , derived from a stylised lowercase ""b"", lowers a note by a half step (semitone). For instance, the music below has a key signature with three flats (indicating either E major or C minor) and the note, D, has a flat accidental. \override Score.TimeSignature #'stencil = ##f \relative c" { </score> The Unicode