7♭5 Chords on Piano
The 7♭5 chord is a dominant 7th with a flatted fifth — containing two tritones that create maximum harmonic tension. It is used in jazz as an altered dominant, tritone substitution, and whole-tone harmony device.
Formula: Root – Major 3rd – Diminished 5th – Minor 7th
Intervals: 4 + 2 + 4 semitones
Scale degrees: 1–3–♭5–♭7
Sound: Intensely tense, dissonant, wants to resolve
Symbol: 7♭5 (C7♭5)
Two tritones: The 7♭5 chord contains two tritones — root to ♭5 and 3rd to ♭7. This double-tritone structure makes it the most tension-filled dominant chord available. The whole-tone scale is its natural match, and bebop pianists use it extensively for colourful dominant substitutions.
7♭5 Chord in All 18 Keys
C Dominant 7th ♭5 Chord
C# Dominant 7th ♭5 Chord
Db Dominant 7th ♭5 Chord
D Dominant 7th ♭5 Chord
D# Dominant 7th ♭5 Chord
Eb Dominant 7th ♭5 Chord
E Dominant 7th ♭5 Chord
F Dominant 7th ♭5 Chord
F# Dominant 7th ♭5 Chord
Gb Dominant 7th ♭5 Chord
G Dominant 7th ♭5 Chord
G# Dominant 7th ♭5 Chord
Ab Dominant 7th ♭5 Chord
A Dominant 7th ♭5 Chord
A# Dominant 7th ♭5 Chord
Bb Dominant 7th ♭5 Chord
B Dominant 7th ♭5 Chord
Cb Dominant 7th ♭5 Chord