G (musical note)

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Sol, So, or G is the fifth note of the fixed-Do solfège starting on C. As such it is the dominant, a perfect fifth above C or perfect fourth below C.

When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of Middle G (G4) note is approximately 391.995 Hz. See pitch for a discussion of historical variations in frequency.

It has enharmonic equivalents of Fdouble sharp (a diatonic semitone below G) and Adouble flat (a diatonic semitone above G).

Designation by octave[edit]

Scientific designation Helmholtz designation Bilinear music notation Octave name Frequency (Hz)
G−1 G͵͵͵ or ͵͵͵G or GGGG (-uG) Subsubcontra 12.250
G0 G͵͵ or ͵͵G or GGG (-vG) Subcontra 24.500
G1 G͵ or ͵G or GG (-wG) Contra 48.999
G2 G (-xG) Great 97.999
G3 g (-yG) Small 195.998
G4 g′ (zG) One-lined 391.995
G5 g′′ (yG) Two-lined 783.991
G6 g′′′ (xG) Three-lined 1567.982
G7 g′′′′ (wG) Four-lined 3135.963
G8 g′′′′′ (vG) Five-lined 6271.927
G9 g′′′′′′ (uG) Six-lined 12543.854
G10 g′′′′′′′ (tG) Seven-lined 25087.708


Common scales beginning on G[edit]

Diatonic scales[edit]

Jazz melodic minor[edit]

See also[edit]