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	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

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

• G Ascending Melodic Minor: G A B♭ C D E F♯ G
• G Dorian ♭2: G A♭ B♭ C D E F G
• G Lydian Augmented: G A B C♯ D♯ E F♯ G
• G Lydian Dominant: G A B C♯ D E F G
• G Mixolydian ♭6: G A B C D E♭ F G
• G Locrian ♮2: G A B♭ C D♭ E♭ F G
• G Altered: G A♭ B♭ C♭ D♭ E♭ F G

See also

• Piano key frequencies
• G major
• G minor