G♭ (musical note)

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.

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.

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