G (musical note)

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 F (a diatonic semitone below G♯) and A (a diatonic semitone above G♭).

Designation by octave

Scientific designation Helmholtz designation Octave name Frequency (Hz)
G−1G͵͵͵ or ͵͵͵G or GGGGSubsubcontra12.250
G0G͵͵ or ͵͵G or GGGSubcontra24.500
G1G͵ or ͵G or GGContra48.999
G2GGreat97.999
G3gSmall195.998
G4g′One-lined391.995
G5g′′Two-lined783.991
G6g′′′Three-lined1567.982
G7g′′′′Four-lined3135.963
G8g′′′′′Five-lined6271.927
G9g′′′′′′Six-lined12543.854
G10g′′′′′′′Seven-lined25087.708

Scales

Common scales beginning on G

Diatonic scales

Jazz melodic minor

See also


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