A7b9

Dominant 7th Flat 9

Click keys to experiment with the chord

Notes

1•A43•C#55•E5b7•G5b9•A#5

Formula

1 – 3 – 5 – b7 – b9

Intervals: 0 semitones, 4 semitones, 7 semitones, 10 semitones, 13 semitones

About A7b9

The A7b9 chord sounds dark and dramatic, a staple of minor-key resolutions. It is built from the notes A, C#, E, G, A#, stacking 5 tones to create its distinctive sound.

Notes: A – C# – E – G – A# | Formula: 1 – 3 – 5 – b7 – b9

Related Chords

Dominant 7th Flat 9 in other keys

C7b9 Db7b9 D7b9 Eb7b9 E7b9 F7b9

Other A chords

A5 — Power Chord A6 — Major 6th A7 — Dominant 7th A9 — Dominant 9th A11 — Dominant 11th A13 — Dominant 13th A — Major Am — Minor

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