A flat dominant flat ninth piano chord - Ab7b9

The A flat dominant flat ninth chord is a 5-note chord consisting of the notes Ab, C, Eb, Gb and Bbb.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as Ab7b9.

Interactive piano diagram for the A flat dominant flat ninth chord

Piano keyboard displaying the A flat dominant flat ninth chord with the notes G#AbB#CAD#EbF#Gb

Reduced chords

Chords that are a subset of Ab7b9. These contain less notes but all of them are included in Ab7b9.

Scales with Ab7b9

Below you find all scales that include Ab7b9:

  • phrygian dominant
  • flamenco
  • spanish heptatonic
  • half-whole diminished
  • chromatic

A flat dominant flat ninth piano chord chart image

In case you prefer a non-interactive variant of the chord chart, we've embedded a PNG image below that shows the notes for the the Ab7b9 chord. Feel free to save or share the image as needed.

Piano chord chart for the A flat dominant flat ninth chord (Ab7b9). The notes Ab, C, Eb, Gb and Bbb are highlighted.