A9
A dominant ninth
Notes
A – C♯ – E – G – B
Formula
1 – 3 – 5 – ♭7 – 9
A dominant seventh chord with a major ninth on top.
To build A9, start on A and stack the intervals 3, 5, ♭7, 9 above it.
On piano
On guitar
Shapes generated and checked against the chord engine, standard tuning.
5–0–5–4–2–0Open in Explorer
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Fret 2
Fret 4
Fret 5
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Fret 5
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5–4–5–0–0–0Open in Explorer
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Fret 5
Fret 4
Fret 5
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5–0–5–6–0–0Open in Explorer
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Fret 6
Fret 5
OOpen
Fret 5
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