G♯ (musical note)

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G♯ (G-sharp) or sol dièse is the ninth semitone of the solfège. In the German pitch nomenclature, it is known as gis.[1]

It lies a chromatic semitone above G and a diatonic semitone below A, thus being enharmonic to la bémol or A (A-flat).[citation needed]

When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of the G♯ semitone is approximately 415.305 Hz. See pitch (music) for a discussion of historical variations in frequency.[citation needed]

G♯/A♭ is the only note to have only one other enharmonic.

Designation by octave[edit]

Scientific designation Helmholtz designation Octave name Frequency (Hz)
G−1 G͵͵͵ or ͵͵͵G or GGGG Subsubcontra 12.978
G0 G͵͵ or ͵͵G or GGG Subcontra 25.957
G1 G͵ or ͵G or GG Contra 51.913
G2 G Great 103.826
G3 g Small 207.652
G4 g One-lined 415.305
G5 g′′ Two-lined 830.609
G6 g′′′ Three-lined 1661.219
G7 g′′′′ Four-lined 3322.438
G8 g′′′′′ Five-lined 6644.875
G9 g′′′′′′ Six-lined 13289.750
G10 g′′′′′′′ Seven-lined 26579.501


Common scales beginning on G[edit]

  • G Major: G A B C D E Fdouble sharp G
  • G Natural Minor: G A B C D E F G
  • G Harmonic Minor: G A B C D E Fdouble sharp G
  • G Melodic Minor Ascending: G A B C D E Fdouble sharp G
  • G Melodic Minor Descending: G F E D C B A G

Diatonic scales[edit]

  • G Ionian: G A B C D E Fdouble sharp G
  • G Dorian: G A B C D E F G
  • G Phrygian: G A B C D E F G
  • G Lydian: G A B Cdouble sharp D E Fdouble sharp G
  • G Mixolydian: G A B C D E F G
  • G Aeolian: G A B C D E F G
  • G Locrian: G A B C D E F G

Jazz melodic minor[edit]

See also[edit]


  1. ^ "The names of keys in English, French, German, Italian, and Spanish". Music Cataloging at Yale Language Tools. Yale University. Retrieved 2016-09-20.