Bb maj13(#11)/F#

The Bb maj13(#11) chord consists of the Bb (Perfect unison), D (Major third), F (Perfect fifth), A (Major seventh), C (Major ninth), E (Augmented eleventh) and G (Major thirteenth) notes, with F# as the bass note.

Piano keyboard showing the notes for a Bb maj13(#11)/F# chord

How to play the Bb maj13(#11)/F# chord

  1. Play F# as the lowest bass note in the left hand
  2. Find Bb (Root) on the piano keyboard
  3. Add D (Major third) — 4 semitones above Bb
  4. Add F (Perfect fifth) — 7 semitones above Bb
  5. Add A (Major seventh) — 11 semitones above Bb
  6. Add C (Major ninth) — 14 semitones above Bb
  7. Add E (Augmented eleventh) — 18 semitones above Bb
  8. Add G (Major thirteenth) — 21 semitones above Bb
  9. Press all 8 notes simultaneously to sound the Bb maj13(#11)/F# chord