G♯, or G-sharp, is a musical note that is one semitone higher than G. It is commonly used in various musical scales and compositions, playing a crucial role in creating melodies and harmonies. In the context of the piano, G♯ is the black key immediately to the right of the G key. In music theory, G♯ can be represented in different ways, such as its enharmonic equivalent, A♭. This means that G♯ and A♭ sound the same but are notated differently depending on the musical context. G♯ is often found in genres like classical, jazz, and pop music.