A 6(add9)/A#

The A 6(add9) chord consists of the A (Perfect unison), C# (Major third), E (Perfect fifth), F# (Major sixth) and B (Major ninth) notes, with A# as the bass note.

Piano keyboard showing the notes for a A 6(add9)/A# chord

How to play the A 6(add9)/A# chord

  1. Play A# as the lowest bass note in the left hand
  2. Find A (Root) on the piano keyboard
  3. Add C# (Major third) — 4 semitones above A
  4. Add E (Perfect fifth) — 7 semitones above A
  5. Add F# (Major sixth) — 9 semitones above A
  6. Add B (Major ninth) — 14 semitones above A
  7. Press all 6 notes simultaneously to sound the A 6(add9)/A# chord

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