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Chord type

Dominant 7th ♭5 ♯9 Chords on Piano

The dominant 7th ♭5 ♯9 combines the tritone-substitute quality of the ♭5 with the blues-rock bite of the ♯9. It is closely related to the altered scale and functions as a compact altered dominant voicing, four notes that capture the essence of the full altered sound. Common in jazz comping and solo piano arrangements.

Each key below opens the full reference entry — keyboard diagram, audio, inversions, fingerings, and notation.

Formula: Root – Major 3rd – Diminished 5th – Minor 7th – Augmented 9th

Scale degrees: 1–3–♭5–♭7–♯9

Sound: Altered, compact, blues-jazz, tritone

Symbol: 7♭5♯9 (C7♭5♯9)

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All 18 spellings, ♯ and ♭ keys listed separately.

Dominant 7th ♭5 ♯9 Chord in All 18 Keys

C Dominant 7th ♭5 ♯9 ChordNotes: C – E – G♭ – B♭ – D♯

C♯ Dominant 7th ♭5 ♯9 ChordNotes: C♯ – E♯ – G – B – D♯♯

D♭ Dominant 7th ♭5 ♯9 ChordNotes: D♭ – F – A♭♭ – C♭ – E

D Dominant 7th ♭5 ♯9 ChordNotes: D – F♯ – A♭ – C – E♯

D♯ Dominant 7th ♭5 ♯9 ChordNotes: D♯ – F♯♯ – A – C♯ – E♯♯

E♭ Dominant 7th ♭5 ♯9 ChordNotes: E♭ – G – B♭♭ – D♭ – F♯

E Dominant 7th ♭5 ♯9 ChordNotes: E – G♯ – B♭ – D – F♯♯

F Dominant 7th ♭5 ♯9 ChordNotes: F – A – C♭ – E♭ – G♯

F♯ Dominant 7th ♭5 ♯9 ChordNotes: F♯ – A♯ – C – E – G♯♯

G♭ Dominant 7th ♭5 ♯9 ChordNotes: G♭ – B♭ – D♭♭ – F♭ – A

G Dominant 7th ♭5 ♯9 ChordNotes: G – B – D♭ – F – A♯

G♯ Dominant 7th ♭5 ♯9 ChordNotes: G♯ – B♯ – D – F♯ – A♯♯

A♭ Dominant 7th ♭5 ♯9 ChordNotes: A♭ – C – E♭♭ – G♭ – B

A Dominant 7th ♭5 ♯9 ChordNotes: A – C♯ – E♭ – G – B♯

A♯ Dominant 7th ♭5 ♯9 ChordNotes: A♯ – C♯♯ – E – G♯ – B♯♯

B♭ Dominant 7th ♭5 ♯9 ChordNotes: B♭ – D – F♭ – A♭ – C♯

B Dominant 7th ♭5 ♯9 ChordNotes: B – D♯ – F – A – C♯♯

C♭ Dominant 7th ♭5 ♯9 ChordNotes: C♭ – E♭ – G♭♭ – B♭♭ – D