The G-sharp dominant minor ninth chord (abbreviated "G#7(b9) 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 a G-sharp dominant seventh chord.

In practice, the fifth (D) is often omitted from the G#7(b9) chord because it's not always possible to play all notes simultaneously.

Name
G-sharp dominant minor ninth chord
Notes
G B D F A
Intervals
1 3 5 7 9
Chord symbol
G7(b9)
Alternative symbol
G7b9
Type
pentad (five-note chord)

G#7(b9) chord on piano

G#7(b9) chord on guitar

G#7(b9) chord on ukulele

G#7(b9) chord on the staff