Ab 7(#9)

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

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

How to play the Ab 7(#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 B (Minor tenth) — 15 semitones above Ab
  6. Press all 5 notes simultaneously to sound the Ab 7(#9) chord

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