A9 chord on Dobro / Resonator
in Open G (GBDGBD) tuning
A9
Dominant 9
Notes:A · C# · E · G · B
Piano Left hand Right hand
Fingerings (16)
A9 shapes as text
| Shape | Frets | Fingers | Notes | Difficulty |
|---|---|---|---|---|
| 2 2 2 0 0 x | 1 1 1 – – – | A C# E G B x | easy · barre on fret 2 | |
| 2 2 2 4 2 5 | 1 1 1 2 1 3 | A C# E B C# G | medium · barre on fret 2 | |
| 4 0 5 6 0 7 | 1 – 2 3 – 4 | B B G C# B A | medium | |
| x x 7 6 0 5 | – – 3 2 – 1 | x x A C# B G | medium | |
| x x 7 6 8 9 | – – 2 1 3 4 | x x A C# G B | medium | |
| 0 0 7 9 8 11 | – – 1 3 2 4 | G B A E G C# | hard | |
| x 10 9 x 8 11 | – 3 2 – 1 4 | x A B x G C# | hard | |
| x 10 9 12 0 11 | – 2 1 4 – 3 | x A B G B C# | medium | |
| x 10 11 12 0 11 | – 1 2 4 – 3 | x A C# G B C# | medium | |
| 2 0 2 0 2 2 | 1 – 2 – 3 4 | A B E G C# E | medium | |
| 2 2 2 4 5 5 | 1 1 1 2 3 4 | A C# E B E G | medium · barre on fret 2 | |
| 4 0 7 6 0 5 | 1 – 4 3 – 2 | B B A C# B G | medium | |
| 6 0 5 6 5 7 | 2 – 1 3 1 4 | C# B G C# E A | medium · barre on fret 5 | |
| x 10 9 6 8 x | – 4 3 1 2 – | x A B C# G x | hard | |
| 0 0 7 9 10 11 | – – 1 2 3 4 | G B A E A C# | hard | |
| x 10 11 x 8 9 | – 3 4 – 1 2 | x A C# x G B | hard |
The A9 chord (Dominant 9) is built from the notes A, C#, E, G, B. Below are playable fingerings for Dobro / Resonator generated for your selected tuning, ordered from open-position shapes up the neck. Tap a diagram to hear it, or switch to the piano view to see the same harmony on keys.
How the A9 chord is built
Formula: 1 · 3 · 5 · ♭7 · 9
| Degree | Semitones | Note |
|---|---|---|
| 1 | 0 | A |
| 3 | 4 | C# |
| 5 | 7 | E |
| ♭7 | 10 | G |
| 9 | 14 | B |
More A chords
Other roots
See A9 in another tuning
What notes make up the A9 chord?
A9 is a Dominant 9 chord built from the notes A, C#, E, G, B.
How do I read the diagram?
Strings run left to right from the lowest to the first string; the numbers show which finger presses each fret. An ○ marks an open string, an ✕ marks a muted one.