A# maj7(b5)/D#

The A# maj7(b5) chord consists of the A# (Perfect unison), D (Major third), E (Diminished fifth) and A (Major seventh) notes, with D# as the bass note.

Piano keyboard showing the notes for a A# maj7(b5)/D# chord

How to play the A# maj7(b5)/D# chord

  1. Play D# 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 E (Diminished fifth) — 6 semitones above A#
  5. Add A (Major seventh) — 11 semitones above A#
  6. Press all 5 notes simultaneously to sound the A# maj7(b5)/D# chord

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