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