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A7b5 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
A3 · C#4 · Eb4 · G4

How to play the A7b5 chord on piano

Play the recommended root-position voicing with the right hand: A3, C#4, Eb4 and G4. Suggested fingering is 1–2–3–5 (1 is the thumb).

Notation for A7b5 chord

Other names: A 7th flat 5

Music theory name: seventh flat five chord

Common name: A 7b5 chord

Intervals and tones in A7b5 chord

Note Interval
A Root
C# Major 3rd
Eb Diminished 5th
G Minor 7th

Inversions

1st inversion
C#4 · Eb4 · G4 · A4
2nd inversion
Eb4 · G4 · A4 · C#5

More chords with A as the root

The same chord type in other keys