A9 chord on 12-String Guitar – Open C
in Open C (C-C-G-G-C-C-G-G-C-C-E-E) 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 |
|---|---|---|---|---|
| x x 2 2 1 1 4 4 1 1 3 3 | – – 2 2 1 1 4 4 1 1 3 3 | x x A A C# C# B B C# C# G G | medium · barre on fret 1 | |
| 4 4 4 4 4 4 6 6 7 7 5 5 | 1 1 1 1 1 1 3 3 4 4 2 2 | E E B B E E C# C# G G A A | medium · barre on fret 4 | |
| x x x x 9 9 6 6 7 7 7 7 | – – – – 4 4 1 1 2 2 3 3 | x x x x A A C# C# G G B B | medium | |
| 9 9 x x 7 7 0 0 11 11 9 9 | 2 2 – – 1 1 – – 4 4 3 3 | A A x x G G G G B B C# C# | hard | |
| 9 9 9 9 9 9 12 12 11 11 9 9 | 1 1 1 1 1 1 3 3 2 2 1 1 | A A E E A A G G B B C# C# | medium · barre on fret 9 | |
| x x 2 2 x x 4 4 1 1 3 3 | – – 2 2 – – 4 4 1 1 3 3 | x x A A x x B B C# C# G G | hard | |
| 4 4 4 4 7 7 6 6 4 4 5 5 | 1 1 1 1 4 4 3 3 1 1 2 2 | E E B B G G C# C# E E A A | medium · barre on fret 4 | |
| 9 9 6 6 7 7 6 6 x x 7 7 | 4 4 1 1 2 2 1 1 – – 3 3 | A A C# C# G G C# C# x x B B | hard · barre on fret 6 | |
| 9 9 x x 11 11 0 0 7 7 9 9 | 2 2 – – 4 4 – – 1 1 3 3 | A A x x B B G G G G C# C# | hard | |
| 9 9 9 9 11 11 12 12 9 9 9 9 | 1 1 1 1 2 2 3 3 1 1 1 1 | A A E E B B G G A A C# C# | medium · barre on fret 9 | |
| x x 2 2 1 1 4 4 x x 3 3 | – – 2 2 1 1 4 4 – – 3 3 | x x A A C# C# B B x x G G | hard | |
| 4 4 6 6 4 4 4 4 7 7 5 5 | 1 1 3 3 1 1 1 1 4 4 2 2 | E E C# C# E E B B G G A A | medium · barre on fret 4 | |
| 9 9 6 6 x x 0 0 7 7 7 7 | 4 4 1 1 – – – – 2 2 3 3 | A A C# C# x x G G G G B B | hard | |
| 9 9 x x 7 7 x x 11 11 9 9 | 2 2 – – 1 1 – – 4 4 3 3 | A A x x G G x x B B C# C# | hard | |
| 9 9 9 9 11 11 12 12 11 11 9 9 | 1 1 1 1 2 2 4 4 3 3 1 1 | A A E E B B G G B B C# C# | medium · barre on fret 9 | |
| 1 1 4 4 1 1 0 0 4 4 5 5 | 1 1 2 2 1 1 – – 3 3 4 4 | C# C# B B C# C# G G E E A A | hard · barre on fret 1 |
The A9 chord (Dominant 9) is built from the notes A, C#, E, G, B. Below are playable fingerings for 12-String Guitar – Open C 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.