C#7b9 Piano Chord
A dramatic, tense sound. Common in jazz and flamenco. The flat ninth creates a strong chromatic pull toward resolution.
Recommended voicing
Left hand
C#3 · B3
fingers 5–1
Right hand
E#4 · D5
fingers 1–5
With bass · rootless
Left hand
E#3 · G#3 · B3 · D4
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.
Other names for the C#7b9 chord
Other names: C# 7th flat 9
Music theory name: seventh flat nine chord
Common name: C# 7b9 chord
Notes and intervals in the C#7b9 chord
| Note | Interval |
|---|---|
| C# | Root |
| E# | Major 3rd |
| G# | Perfect 5th |
| B | Minor 7th |
| D | Minor 9th |