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Chord type

Dominant 7th ♭9 Chords on Piano

The dominant 7th ♭9 chord adds a minor ninth to a dominant 7th, creating an intense, dark, and dissonant tension chord that resolves powerfully to minor keys. It is the quintessential "altered dominant" sound in jazz, the chord that makes a V–i resolution feel urgent and dramatic.

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

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

Scale degrees: 1–3–5–♭7–♭9

Sound: Dark, tense, dramatic, jazz

Symbol: 7♭9 (C7♭9)

The minor-key resolution chord: When you see a V chord resolving to a minor tonic (like G7 → Cm), the 7♭9 is almost always a stronger choice than a plain dominant 7th. The ♭9 (A♭ in G7♭9) is already a note in C minor, so it connects the dominant chord more tightly to the key it resolves to.

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All 18 spellings, ♯ and ♭ keys listed separately.

Dominant 7th ♭9 Chord in All 18 Keys

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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