G# 9(b5)/F

The G# 9(b5) chord consists of the G# (Perfect unison), C (Major third), D (Diminished fifth), F# (Minor seventh) and A# (Major ninth) notes, with F as the bass note.

Piano keyboard showing the notes for a G# 9(b5)/F chord

How to play the G# 9(b5)/F chord

  1. Play F as the lowest bass note in the left hand
  2. Find G# (Root) on the piano keyboard
  3. Add C (Major third) — 4 semitones above G#
  4. Add D (Diminished fifth) — 6 semitones above G#
  5. Add F# (Minor seventh) — 10 semitones above G#
  6. Add A# (Major ninth) — 14 semitones above G#
  7. Press all 6 notes simultaneously to sound the G# 9(b5)/F chord

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