G-Flat, also known as G♭, is a musical note that is one semitone lower than G. It is commonly used in various musical scales and compositions, particularly in genres like jazz, classical, and blues. G-Flat is often represented on sheet music with a flat symbol (♭) placed before the note G. In terms of its position on a piano, G-Flat is the black key immediately to the left of G. It is part of the G-Flat major scale, which consists of the notes G♭, A♭, B♭, C♭, D♭, E♭, and F. Understanding G-Flat is essential for musicians when playing in different keys and harmonies.