Ab 7(b9)(#9)

The Ab 7(b9)(#9) chord consists of the Ab (Perfect unison), C (Major third), Eb (Perfect fifth), Gb (Minor seventh), Bbb (Minor ninth) and B (Minor tenth) notes.

Piano keyboard showing the notes for a Ab 7(b9)(#9) chord

How to play the Ab 7(b9)(#9) chord

  1. Find Ab (Root) on the piano keyboard
  2. Add C (Major third) — 4 semitones above Ab
  3. Add Eb (Perfect fifth) — 7 semitones above Ab
  4. Add Gb (Minor seventh) — 10 semitones above Ab
  5. Add Bbb (Minor ninth) — 13 semitones above Ab
  6. Add B (Minor tenth) — 15 semitones above Ab
  7. Press all 6 notes simultaneously to sound the Ab 7(b9)(#9) chord

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