G-sharp major
{ \magnifyStaff #3/2 \omit Score.TimeSignature \key gis \major s16 \clef F \key gis \major s^"" }

Alternative notation
{ \magnifyStaff #3/2 \omit Score.TimeSignature \set Staff.keyAlterations = #`((3 . ,SHARP)(0 . ,SHARP)(4 . ,SHARP)(1 . ,SHARP)(-2 . ,SHARP)(2 . ,SHARP)(-1 . ,SHARP)(3 . ,DOUBLE-SHARP)) s^"" }
Relative keyE-sharp minor (theoretical)
enharmonic: F minor
Parallel keyG-sharp minor
Dominant keyD-sharp major (theoretical)
enharmonic: E-flat major
SubdominantC-sharp major
enharmonic: D-flat major
EnharmonicA-flat major
Component pitches
G♯, A♯, B♯, C♯, D♯, E♯, Fdouble sharp

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

Its relative minor is E-sharp minor, which is usually replaced by F minor. Its parallel minor is G-sharp minor; its enharmonic equivalent is A-flat major.


The G-sharp major scale is:

{ \omit Score.TimeSignature \relative c'' { \key gis \major \time 7/4 gis ais bis cis dis eis fisis gis fisis eis dis cis bis ais gis2 \clef F \key gis \major } }

Although the enharmonic key of A-flat major is preferred because A-flat major has only four flats as opposed to G-sharp major's eight sharps (including the Fdouble sharp), G-sharp major appears 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 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 four 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 Fdouble sharp. The key signature is shown as in the LilyPond example with the scale above, starting with the C♯ and ending at the Fdouble sharp.[2]

Scale degree chords

References

  1. ↑ Thomas Busby (1840). "G-sharp major". A Dictionary of Three Thousand Musical Terms. revised by J. A. Hamilton. London: D'Almaine. p. 55.
  2. ↑ "John Foulds: A World Requiem (1921), Wise Music Classical
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