G (G-flat; also called 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.[1] See musical pitch for a discussion of historical variations in frequency.
| Scientific designation | Helmholtz designation | Octave name | Frequency (Hz) | |
|---|---|---|---|---|
| G−1 | G͵͵͵ or ͵͵͵G or GGGG | Octocontra | ||
| G0 | G͵͵ or ͵͵G or GGG | Subcontra | ||
| G1 | G͵ or ͵G or GG | Contra | ||
| G2 | G | Great | ||
| G3 | g | Small | ||
| G4 | g | One-lined | ||
| G5 | g | Two-lined | ||
| G6 | g | Three-lined | ||
| G7 | g | Four-lined | ||
| G8 | g | Five-lined | ||
| G9 | g | Six-lined | ||
| G10 | g | Seven-lined |