G♯ (musical note)

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

G Sharp

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 octaveEdit

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 GEdit

Diatonic scalesEdit

  • G Ionian: G A B C D E F  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 C  D E F  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 minorEdit

See alsoEdit


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