A9 chord on 12-String Guitar – Half Step Down
in Half Step Down (D#-D#-G#-G#-C#-C#-F#-F#-A#-A#-D#-D#) 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 1 1 0 0 1 1 1 1 1 1 | – – 1 1 – – 2 2 3 3 4 4 | x x A A C# C# G G B B E E | medium | |
| 6 6 3 3 3 3 3 3 3 3 4 4 | 3 3 1 1 1 1 1 1 1 1 2 2 | A A B B E E A A C# C# G G | medium · barre on fret 3 | |
| 6 6 x x 0 0 5 5 6 6 4 4 | 3 3 – – – – 2 2 4 4 1 1 | A A x x C# C# B B E E G G | hard | |
| 6 6 5 5 6 6 5 5 6 6 x x | 2 2 1 1 3 3 1 1 4 4 – – | A A C# C# G G B B E E x x | medium · barre on fret 5 | |
| 6 6 8 8 6 6 7 7 6 6 8 8 | 1 1 3 3 1 1 2 2 1 1 4 4 | A A E E G G C# C# E E B B | medium · barre on fret 6 | |
| x x x x 8 8 7 7 9 9 8 8 | – – – – 2 2 1 1 4 4 3 3 | x x x x A A C# C# G G B B | medium | |
| 8 8 8 8 8 8 10 10 9 9 10 10 | 1 1 1 1 1 1 3 3 2 2 4 4 | B B E E A A E E G G C# C# | medium · barre on fret 8 | |
| 10 10 11 11 10 10 10 10 11 11 10 10 | 1 1 2 2 1 1 1 1 3 3 1 1 | C# C# G G B B E E A A C# C# | easy · barre on fret 10 | |
| x x 1 1 0 0 1 1 1 1 x x | – – 1 1 – – 2 2 3 3 – – | x x A A C# C# G G B B x x | easy | |
| 6 6 3 3 3 3 5 5 3 3 4 4 | 4 4 1 1 1 1 3 3 1 1 2 2 | A A B B E E B B C# C# G G | medium · barre on fret 3 | |
| 6 6 5 5 0 0 5 5 x x 4 4 | 4 4 2 2 – – 3 3 – – 1 1 | A A C# C# C# C# B B x x G G | hard | |
| 6 6 5 5 6 6 5 5 x x x x | 2 2 1 1 3 3 1 1 – – – – | A A C# C# G G B B x x x x | easy · barre on fret 5 | |
| 6 6 8 8 6 6 7 7 x x 8 8 | 1 1 3 3 1 1 2 2 – – 4 4 | A A E E G G C# C# x x B B | hard · barre on fret 6 | |
| 8 8 x x 8 8 7 7 9 9 x x | 2 2 – – 3 3 1 1 4 4 – – | B B x x A A C# C# G G x x | hard | |
| 10 10 8 8 8 8 10 10 9 9 8 8 | 3 3 1 1 1 1 4 4 2 2 1 1 | C# C# E E A A E E G G B B | medium · barre on fret 8 | |
| x x 11 11 10 10 10 10 11 11 10 10 | – – 2 2 1 1 1 1 3 3 1 1 | x x G G B B E E A A C# C# | easy · barre on fret 10 |
The A9 chord (Dominant 9) is built from the notes A, C#, E, G, B. Below are playable fingerings for 12-String Guitar – Half Step Down 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.