C7b5 Piano Chord
A tense jazz chord with a tritone replacing the perfect fifth. Often serves as a tritone substitution in jazz progressions — replacing the classic dominant seventh chord.
Recommended voicing
C4 · E4 · F#4 · Bb4
With bass · rootless
Left hand
F#3 · Bb3 · E4
fingers 5–3–1
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 C7b5 chord
Other names: C 7th flat 5
Music theory name: seventh flat five chord
Common name: C 7b5 chord
Intervals and tones in C7b5 chord
| Note | Interval |
|---|---|
| C | Root |
| E | Major 3rd |
| F# | Diminished 5th |
| B | Minor 7th |
Inversions
1st inversion
E4 · F#4 · Bb4 · C5
2nd inversion
F#4 · Bb4 · C5 · E5