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C#7b5 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.

Piano

Recommended voicing
C#4 · F4 · G4 · B4

How to play the C#7b5 chord on piano

Play the recommended root-position voicing with the right hand: C#4, F4, G4 and B4. Suggested fingering is 1–2–3–5 (1 is the thumb).

Notation for C#7b5 chord

Other names: C# 7th flat 5

Music theory name: seventh flat five chord

Common name: C# 7b5 chord

Intervals and tones in C#7b5 chord

Note Interval
C# Root
F Major 3rd
G Diminished 5th
H Minor 7th

Inversions

1st inversion
F4 · G4 · B4 · C#5
2nd inversion
G4 · B4 · C#5 · F5

More chords with C# as the root

The same chord type in other keys