B 7(b9)

The B 7(b9) chord consists of the B (Perfect unison), D# (Major third), F# (Perfect fifth), A (Minor seventh) and C (Minor ninth) notes.

Piano keyboard showing the notes for a B 7(b9) chord

How to play the B 7(b9) chord

  1. Find B (Root) on the piano keyboard
  2. Add D# (Major third) — 4 semitones above B
  3. Add F# (Perfect fifth) — 7 semitones above B
  4. Add A (Minor seventh) — 10 semitones above B
  5. Add C (Minor ninth) — 13 semitones above B
  6. Press all 5 notes simultaneously to sound the B 7(b9) chord

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