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Sol or G is the fifth note of the solfege.
When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of the G note is approximately 391.995 Hz. See pitch (music) for a discussion of historical variations in frequency.
[edit] Designation by octave
| Scientific Designation |
Helmholtz Designation |
Octave Name |
Frequency (Hz) |
| G-1 |
Gˌˌˌ |
Subsubcontra |
12.25 |
| G0 |
Gˌˌ |
Subcontra |
24.5 |
| G1 |
Gˌ |
Contra |
48.999 |
| G2 |
G |
Great |
97.999 |
| G3 |
g |
Small |
195.998 |
| G4 |
g′ |
One-lined |
391.995 |
| G5 |
g″ |
Two-lined |
783.991 |
| G6 |
g′″ |
Three-lined |
1567.982 |
| G7 |
g″″ |
Four-lined |
3135.964 |
| G8 |
g′″″ |
Five-lined |
6271.927 |
| G9 |
g″″″ |
Six-lined |
12543.854 |
