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G♯ (musical note)

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{ \new Staff \with{ \magnifyStaff #3/2 } << \time 2/1 \override Score.TimeSignature #'stencil = ##f { \clef bass gis1_G-sharp \clef treble gis' } >> }

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.[2] See pitch (music) for a discussion of historical variations in frequency.

The notes A and G are the only notes to have only one enharmonic, since they cannot be reached in any other way by a single or double sharp or a single or double flat from any of the seven white notes.

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 13289.75
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.
  2. ^ Suits, B. H. (1998). "Physics of Music Notes - Scales: Just vs Equal Temperament". MTU.edu. Michigan Technological University. Archived from the original on 27 November 2023. Retrieved 5 February 2024.