G#9 chord

The G-sharp dominant ninth chord (abbreviated G#9 chord) is a five-note chord consisting of the notes G♯, B♯, D♯, F♯, and A♯. The chord is formed by adding a major ninth to the G-sharp dominant seventh chord.

In practice, the fifth (D♯) is sometimes omitted from the G#9 chord because it's not always possible to play all notes simultaneously.