C9 chord on 6-String Guitar – Open A 2
in Open A 2 (E-A-E-A-C#-E) tuning · Also known as Slide A
C9
Dominant 9
Notes:C · E · G · A# · D
Piano Left hand Right hand
Fingerings (16)
C9 shapes as text
| Shape | Frets | Fingers | Notes | Difficulty |
|---|---|---|---|---|
| x 3 0 1 1 0 | – 3 – 1 2 – | x C E A# D E | medium | |
| x 3 3 5 3 6 | – 1 1 2 1 3 | x C G D E A# | medium · barre on fret 3 | |
| 8 5 6 5 6 0 | 4 1 2 1 3 – | C D A# D G E | medium · barre on fret 5 | |
| 8 x 6 7 6 10 | 3 – 1 2 1 4 | C x A# E G D | hard · barre on fret 6 | |
| 8 7 10 7 9 0 | 2 1 4 1 3 – | C E D E A# E | medium · barre on fret 7 | |
| 8 x 0 10 9 10 | 1 – – 3 2 4 | C x E G A# D | hard | |
| x 3 0 1 1 3 | – 3 – 1 2 4 | x C E A# D G | medium | |
| x 3 6 5 3 3 | – 1 3 2 1 1 | x C A# D E G | medium · barre on fret 3 | |
| 8 5 6 5 9 0 | 3 1 2 1 4 – | C D A# D A# E | hard · barre on fret 5 | |
| 8 x 6 7 x 10 | 3 – 1 2 – 4 | C x A# E x D | hard | |
| 8 7 10 7 9 x | 2 1 4 1 3 – | C E D E A# x | medium · barre on fret 7 | |
| 8 x 10 10 9 0 | 1 – 3 4 2 – | C x D G A# E | hard | |
| x 3 3 1 1 0 | – 3 4 1 2 – | x C G A# D E | medium | |
| x 3 6 5 3 6 | – 1 3 2 1 4 | x C A# D E A# | medium · barre on fret 3 | |
| 8 5 8 5 9 0 | 2 1 3 1 4 – | C D C D A# E | hard · barre on fret 5 | |
| 8 x 10 7 x 6 | 3 – 4 2 – 1 | C x D E x A# | hard |
The C9 chord (Dominant 9) is built from the notes C, E, G, A#, D. Below are playable fingerings for 6-String Guitar – Open A 2 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 C9 chord is built
Formula: 1 · 3 · 5 · ♭7 · 9
| Degree | Semitones | Note |
|---|---|---|
| 1 | 0 | C |
| 3 | 4 | E |
| 5 | 7 | G |
| ♭7 | 10 | A# |
| 9 | 14 | D |
More C chords
Other roots
See C9 in another tuning
What notes make up the C9 chord?
C9 is a Dominant 9 chord built from the notes C, E, G, A#, D.
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.