F# 7(b9)(#9)

The F# 7(b9)(#9) chord consists of the F# (Perfect unison), A# (Major third), C# (Perfect fifth), E (Minor seventh), G (Minor ninth) and A (Minor tenth) notes.

Piano keyboard showing the notes for a F# 7(b9)(#9) chord

How to play the F# 7(b9)(#9) chord

  1. Find F# (Root) on the piano keyboard
  2. Add A# (Major third) — 4 semitones above F#
  3. Add C# (Perfect fifth) — 7 semitones above F#
  4. Add E (Minor seventh) — 10 semitones above F#
  5. Add G (Minor ninth) — 13 semitones above F#
  6. Add A (Minor tenth) — 15 semitones above F#
  7. Press all 6 notes simultaneously to sound the F# 7(b9)(#9) chord

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