Gbm9 chord
The G-flat minor ninth chord (abbreviated "Gbm9 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 minor seventh chord.
In practice, the fifth (D♭) is sometimes omitted from the Gbm9 chord because it's not always possible to play all notes simultaneously.
Name
G-flat minor ninth chord
Notes
G♭ B♭♭ D♭ F♭ A♭
Intervals
1 ♭3 5 ♭7 9
Chord symbol
G♭m9
Alternative symbols
G♭–9 G♭mi9 G♭min9
Type
Pentad (five-note chord)