F 7(b9)/Gb
The F 7(b9) chord consists of the F (Perfect unison), A (Major third), C (Perfect fifth), Eb (Minor seventh) and Gb (Minor ninth) notes, with Gb as the bass note.
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How to play the F 7(b9)/Gb chord
- Play Gb as the lowest bass note in the left hand
- Find F (Root) on the piano keyboard
- Add A (Major third) — 4 semitones above F
- Add C (Perfect fifth) — 7 semitones above F
- Add Eb (Minor seventh) — 10 semitones above F
- Add Gb (Minor ninth) — 13 semitones above F
- Press all 6 notes simultaneously to sound the F 7(b9)/Gb chord