The F dominant minor ninth chord (abbreviated "F7(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 dominant seventh chord.

In practice, the fifth (C) is often omitted from the F7(b9) chord because it's not always possible to play all notes simultaneously.

Name
F dominant minor ninth chord
Notes
F A C E G
Intervals
1 3 5 7 9
Chord symbol
F7(b9)
Alternative symbol
F7b9
Type
Pentad (five-note chord)

F7(b9) chord on piano

F7(b9) chord on guitar

F7(b9) chord on ukulele

F7(b9) chord on the staff