Db7(b9) chord
The D-flat dominant minor ninth chord (abbreviated "Db7(b9) chord") is a five-note chord consisting of the notes D♭, F, A♭, C♭, and E♭♭. The chord is formed by adding a major ninth to a D-flat dominant seventh chord.
In practice, the fifth (A♭) is often omitted from the Db7(b9) chord because it's not always possible to play all notes simultaneously.
Name
D-flat dominant minor ninth chord
Notes
D♭ F A♭ C♭ E♭♭
Intervals
1 3 5 ♭7 ♭9
Chord symbol
D♭7(b9)
Alternative symbol
D♭7b9
Type
pentad (five-note chord)