G-flat is a musical note that is one semitone lower than G and one semitone higher than F. In the context of the chromatic scale, G-flat is often represented by the symbol G♭. It is commonly used in various musical compositions and can be found in different keys, such as B major and E-flat minor. In terms of its role in music, G-flat can serve as a tonic, dominant, or mediant, depending on the key signature. Musicians may encounter G-flat in both classical and contemporary music, and it can be played on various instruments, including the piano and guitar.