G9b5 Piano Chord
A tense jazz chord with a tritone. Often serves as a tritone substitution for the dominant. The fifth is already altered, so the perfect fifth is not played — the remaining notes are all included.
Recommended voicing
Left hand
G2 · F3
fingers 5–1
Right hand
C#4 · A4 · B4
fingers 1–4–5
With bass · rootless
Left hand
C#3 · F3 · A3 · B3
fingers 5–3–2–1
Right hand
Free
melody / improvisation
Jazz accompaniment with a bass player: the bass supplies the root, leaving the right hand free for melody or improvisation.
Notation for G9b5 chord
Other names: G 9th flat 5
Music theory name: ninth flat five chord
Common name: G 9b5 chord
Intervals and tones in G9b5 chord
| Note | Interval |
|---|---|
| G | Root |
| H | Major 3rd |
| C# | Diminished 5th |
| F | Minor 7th |
| A | Major 9th |