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G-flat (G♭) is the note G lowered by one semitone using a flat (♭). On the piano, G-flat is played on the same key as F-sharp.
What is G-flat?
G-flat is enharmonically equivalent to F-sharp (F#) in the equal temperament tuning system. Although both notes sound identical, G-flat is written when the harmonic or melodic context requires the note to remain a form of G.
G-flat appears in key signatures such as G-flat major and E-flat minor, where correct note spelling is important for reading scales, chords and harmonic progressions.
How is G-flat used in piano playing?
On the piano, G-flat is the middle black key in the group of three black keys. Although it shares the same key as F-sharp, recognizing when to think of the note as G-flat helps pianists read music accurately and understand flat key signatures.
Understanding G-flat improves music-reading skills and strengthens a pianist’s knowledge of harmony, enharmonic spelling and key signatures.