F#7(b9) chord
The F-sharp dominant minor ninth chord (abbreviated "F#7(b9) chord") is a five-note chord consisting of the notes F♯, A♯, C♯, E, and G. The chord is formed by adding a major ninth to a F-sharp dominant seventh chord.
In practice, the fifth (C♯) is often omitted from the F#7(b9) chord because it's not always possible to play all notes simultaneously.
Name
F-sharp dominant minor ninth chord
Notes
F♯ A♯ C♯ E G
Intervals
1 3 5 ♭7 ♭9
Chord symbol
F♯7(b9)
Alternative symbol
F♯7b9
Type
Pentad (five-note chord)