D9 chord (D dominant ninth) on piano
D9 (D dominant ninth) has five notes: D, F sharp, A, C and E. Its formula is 1, 3, 5, b7, 9. In major keys, D9 is the V9 chord in G major.
D9 inversions and fingering
D F# C · LH 5-3-1
D C F# A E · RH 1-2-5 · LH 5-1
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| Symbol | D9 |
|---|---|
| Also written | Ddom9 |
| Notes | D F# A C E |
| Formula | 1 3 5 b7 9 |
| Intervals | root, major third, perfect fifth, minor seventh, major second |
| Type | Dominant ninth chord |
D9 across the keyboard
Piano, C3 to C5. Notes in this scale, low to high: C3 (flat 7), D3 (1), E3 (9), F#3 (3), A3 (5), C4 (flat 7), D4 (1), E4 (9), F#4 (3), A4 (5), C5 (flat 7).
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Questions
What notes are in the D9 chord?
D9 (D dominant ninth) has five notes: D, F sharp, A, C and E. Its formula is 1, 3, 5, b7, 9. D is the root, F# is the major third, A is the perfect fifth, C is the minor seventh and E is the major second.
How do you play D9 on piano?
Play D, F#, A, C and E together. Shell (left hand): D F# C · LH 5-3-1.
What key is D9 in?
In major keys, D9 is the V9 chord in G major. It is diatonic to those keys, so it fits songs in any of them.
What is the difference between D9 and D7?
D9 is D7 (D, F#, A and C) with E, the 9th, added.