Bb m9(#11)

The Bb m9(#11) chord consists of the Bb (Perfect unison), Db (Minor third), F (Perfect fifth), Ab (Minor seventh), C (Major ninth) and E (Augmented eleventh) notes.

Piano keyboard showing the notes for a Bb m9(#11) chord

How to play the Bb m9(#11) chord

  1. Find Bb (Root) on the piano keyboard
  2. Add Db (Minor third) — 3 semitones above Bb
  3. Add F (Perfect fifth) — 7 semitones above Bb
  4. Add Ab (Minor seventh) — 10 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 m9(#11) chord