A# maj7(add13)/B

The A# maj7(add13) chord consists of the A# (Perfect unison), D (Major third), F (Perfect fifth), A (Major seventh) and G (Major thirteenth) notes, with B as the bass note.

Piano keyboard showing the notes for a A# maj7(add13)/B chord

How to play the A# maj7(add13)/B chord

  1. Play B as the lowest bass note in the left hand
  2. Find A# (Root) on the piano keyboard
  3. Add D (Major third) — 4 semitones above A#
  4. Add F (Perfect fifth) — 7 semitones above A#
  5. Add A (Major seventh) — 11 semitones above A#
  6. Add G (Major thirteenth) — 21 semitones above A#
  7. Press all 6 notes simultaneously to sound the A# maj7(add13)/B chord

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