G♭ (musical note)

G (G-flat) (Ges or sol bémol) is the seventh semitone of the solfège.

It lies a diatonic semitone above F and a chromatic semitone below G, thus being enharmonic to F (F-sharp) or fa dièse. However, in some temperaments, it is not the same as F. G is a major third below B, whereas F is a major third above D (a minor third below A).

When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of the G semitone is approximately 369.994 Hz. See pitch (music) for a discussion of historical variations in frequency.

Designation by octave

Scientific designation Helmholtz designation Octave name Frequency (Hz)
G−1G͵͵͵ or ͵͵͵G or GGGGOctocontra11.562
G0G͵͵ or ͵͵G or GGGSubcontra23.125
G1G͵ or ͵G or GGContra46.249
G2GGreat92.499
G3gSmall184.997
G4gOne-lined369.994
G5gTwo-lined739.989
G6gThree-lined1479.978
G7gFour-lined2959.955
G8gFive-lined5919.911
G9gSix-lined11839.822
G10gSeven-lined23679.643

Scales

Common scales beginning on G

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

Diatonic scales

  • 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 minor

See also


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