G♭ (musical note)

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G (G-flat) or Sol Bémol is the seventh semitone of the solfege.

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[edit]

Scientific designation Helmholtz designation Bilinear music notation Octave name Frequency (Hz)
G-1 G͵͵͵ or ͵͵͵G or GGGG (-uG) Subsubcontra 11.562
G0 G͵͵ or ͵͵G or GGG (-vG) Subcontra 23.125
G1 G͵ or ͵G or GG (-wG) Contra 46.249
G2 G (-xG) Great 92.499
G3 g (-yG) Small 184.997
G4 g (zG) One-lined 369.994
G5 g′′ (yG) Two-lined 739.989
G6 g′′′ (xG) Three-lined 1479.978
G7 g′′′′ (wG) Four-lined 2959.955
G8 g′′′′′ (vG) Five-lined 5919.911
G9 g′′′′′′ (uG) Six-lined 11839.822
G10 g′′′′′′′ (tG) Seven-lined 23679.643

Scales[edit]

Common scales beginning on G[edit]

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

Diatonic scales[edit]

  • G Ionian: G A B C D E F G
  • G Dorian: G A Bdouble flat C D E F G
  • G Phrygian: G Adouble flat Bdouble flat C D Edouble flat 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 Bdouble flat C D Edouble flat F G
  • G Locrian: G Adouble flat Bdouble flat C Ddouble flat Edouble flat F G

Jazz Melodic Minor[edit]

See also[edit]