A9 chord on 6-String Guitar – Open A
in Open A (E-A-C#-E-A-E) tuning · Also known as Spanish A
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 |
|---|---|---|---|---|
| x 0 0 0 2 3 | – – – – 1 2 | x A C# E B G | easy | |
| 5 2 x 3 4 x | 4 1 – 2 3 – | A B x G C# x | hard | |
| 5 x 3 7 4 3 | 3 – 1 4 2 1 | A x E B C# G | hard · barre on fret 3 | |
| 5 4 6 7 4 0 | 2 1 3 4 1 – | A C# G B C# E | medium · barre on fret 4 | |
| 5 0 6 7 0 9 | 1 – 2 3 – 4 | A A G B A C# | hard | |
| 7 0 6 0 7 9 | 2 – 1 – 3 4 | B A G E E C# | medium | |
| 9 0 8 7 10 7 | 3 – 2 1 4 1 | C# A A B G B | medium · barre on fret 7 | |
| x 0 10 9 10 9 | – – 2 1 3 1 | x A B C# G C# | easy · barre on fret 9 | |
| x 0 0 3 2 0 | – – – 2 1 – | x A C# G B E | easy | |
| 5 4 x 3 2 x | 4 3 – 2 1 – | A C# x G B x | hard | |
| 5 x x 3 4 7 | 3 – – 1 2 4 | A x x G C# B | hard | |
| 5 0 6 0 4 7 | 2 – 3 – 1 4 | A A G E C# B | medium | |
| 5 0 6 9 0 7 | 1 – 2 4 – 3 | A A G C# A B | hard | |
| 7 0 6 9 7 0 | 2 – 1 4 3 – | B A G C# E E | medium | |
| 9 0 10 7 10 7 | 2 – 3 1 4 1 | C# A B B G B | medium · barre on fret 7 | |
| 9 0 10 0 10 9 | 1 – 3 – 4 2 | C# A B E G C# | medium |
The A9 chord (Dominant 9) is built from the notes A, C#, E, G, B. Below are playable fingerings for 6-String Guitar – Open A 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.