G-sharp, often written as G♯, is a musical note that is one semitone higher than G and one semitone lower than A. It is commonly used in various musical scales and chords, playing a crucial role in the structure of Western music. G-sharp can be found in both major and minor scales, contributing to the overall harmony of a piece. In terms of notation, G-sharp is represented on sheet music with a sharp symbol (♯) placed before the note G. This alteration affects the pitch, making it essential for musicians, including composers and performers, to understand its use in different contexts, such as in the works of Ludwig van Beethoven or Johann Sebastian Bach.