Ab9 chord (A flat dominant ninth) on piano
Ab9 (A flat dominant ninth) has five notes: A flat, C, E flat, G flat and B flat. Its formula is 1, 3, 5, b7, 9. In major keys, Ab9 is the V9 chord in Db major.
Ab9 inversions and fingering
Ab C Gb · LH 5-3-1
Ab Gb C Eb Bb · RH 1-2-5 · LH 5-1
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| Symbol | Ab9 |
|---|---|
| Also written | Abdom9 |
| Notes | Ab C Eb Gb Bb |
| Formula | 1 3 5 b7 9 |
| Intervals | root, major third, perfect fifth, minor seventh, major second |
| Type | Dominant ninth chord |
Ab9 across the keyboard
Piano, C3 to C5. Notes in this scale, low to high: C3 (3), Eb3 (5), Gb3 (flat 7), Ab3 (1), Bb3 (9), C4 (3), Eb4 (5), Gb4 (flat 7), Ab4 (1), Bb4 (9), C5 (3).
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Questions
What notes are in the Ab9 chord?
Ab9 (A flat dominant ninth) has five notes: A flat, C, E flat, G flat and B flat. Its formula is 1, 3, 5, b7, 9. Ab is the root, C is the major third, Eb is the perfect fifth, Gb is the minor seventh and Bb is the major second.
How do you play Ab9 on piano?
Play Ab, C, Eb, Gb and Bb together. Shell (left hand): Ab C Gb · LH 5-3-1.
What key is Ab9 in?
In major keys, Ab9 is the V9 chord in Db major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between Ab9 and Ab7?
Ab9 is Ab7 (Ab, C, Eb and Gb) with Bb, the 9th, added.