C9 chord on 6-String Guitar – Open G
in Open G (D-G-D-G-B-D) tuning · Also known as Spanish, Taro Patch, Slack Key G
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 5 0 3 5 5 | – 2 – 1 3 4 | x C D A# E G | medium | |
| x 5 2 3 3 2 | – 4 1 2 3 1 | x C E A# D E | medium · barre on fret 2 | |
| x 5 5 7 5 8 | – 1 1 2 1 3 | x C G D E A# | medium · barre on fret 5 | |
| 10 7 8 9 x x | 4 1 2 3 – – | C D A# E x x | medium | |
| 10 9 8 9 8 0 | 4 2 1 3 1 – | C E A# E G D | medium · barre on fret 8 | |
| 10 9 10 9 11 0 | 2 1 3 1 4 – | C E C E A# D | medium · barre on fret 9 | |
| x 5 5 3 5 0 | – 2 3 1 4 – | x C G A# E D | medium | |
| x 5 2 3 3 x | – 4 1 2 3 – | x C E A# D x | medium | |
| x 5 8 7 5 5 | – 1 3 2 1 1 | x C A# D E G | medium · barre on fret 5 | |
| 10 9 8 7 x x | 4 3 2 1 – – | C E A# D x x | medium | |
| 10 9 0 0 8 8 | 4 3 – – 1 2 | C E D G G A# | medium | |
| 10 9 0 0 11 10 | 2 1 – – 4 3 | C E D G A# C | medium | |
| x 5 0 3 5 0 | – 2 – 1 3 – | x C D A# E D | medium | |
| x 5 x 3 3 2 | – 4 – 2 3 1 | x C x A# D E | hard | |
| x 5 8 7 5 8 | – 1 3 2 1 4 | x C A# D E A# | medium · barre on fret 5 | |
| 10 7 0 9 11 0 | 3 1 – 2 4 – | C D D E A# D | 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 G 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.