The G-flat dominant ninth chord (abbreviated "Gb9 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-flat dominant seventh chord.

In practice, the fifth (D) is sometimes omitted from the Gb9 chord because it's not always possible to play all notes simultaneously.

Name
G-flat dominant ninth chord
Notes
G B D F A
Intervals
1 3 5 7 9
Chord symbol
G9
Type
Pentad (five-note chord)

Gb9 chord on piano

Gb9 chord on guitar

Gb9 chord on ukulele

Gb9 chord on the staff