G-sharp major

See also: A-flat major
G major
Relative key E minor
enharmonic: F minor
Parallel key G minor
Dominant key D major
enharmonic: E major
Subdominant C major
enharmonic: D major
Enharmonic A major
Component pitches
G, A, B, C, D, E, F, G

G-sharp major is a theoretical key based on the musical note G-sharp, consisting of the pitches G, A, B, C, D, E and F. Its key signature has six sharps and one double sharp.[1]

Although G♯ major is usually notated as the enharmonic key of A♭ major, because A♭ major has only four flats as opposed to G♯ major's eight sharps (including the F), it does appear as a secondary key area in several works in sharp keys - most notably in the Prelude and Fugue in C-sharp major from Johann Sebastian Bach's The Well-Tempered Clavier, Book 1. The G-sharp minor prelude (and, in some editions, the fugue) from the same set ends with a Picardy third, on a G-sharp major chord.

G-sharp major is tonicised briefly in several of Frédéric Chopin's nocturnes in C-sharp minor. A section in the second movement of Chopin's Piano Concerto No. 1 is in G-sharp major, although the key signature has 4 sharps. The end of the exposition of the second movement Charles-Valentin Alkan's Grande sonate 'Les quatre âges', subtitled Quasi-Faust, is in G-sharp major, albeit written with a six-sharp key signature (the movement opens in D-sharp minor and ends in F-sharp major).

The final pages of A World Requiem by John Foulds are written in G-sharp major with its correct key signature shown in the vocal score including the F.


  1. Thomas Busby (1840). "G Sharp Major". A dictionary of three thousand musical terms. revised by J.A. Hamilton. London: D'Almaine and Co. p. 55.

Scales and keys

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