Bb maj9(#11)

The Bb maj9(#11) chord consists of the Bb (Perfect unison), D (Major third), F (Perfect fifth), A (Major seventh), C (Major ninth) and E (Augmented eleventh) notes.

Piano keyboard showing the notes for a Bb maj9(#11) chord

How to play the Bb maj9(#11) chord

  1. Find Bb (Root) on the piano keyboard
  2. Add D (Major third) — 4 semitones above Bb
  3. Add F (Perfect fifth) — 7 semitones above Bb
  4. Add A (Major seventh) — 11 semitones above Bb
  5. Add C (Major ninth) — 14 semitones above Bb
  6. Add E (Augmented eleventh) — 18 semitones above Bb
  7. Press all 6 notes simultaneously to sound the Bb maj9(#11) chord

Related slash chords