C9 chord on 6-String Guitar – All Fourths
in All Fourths (E-A-D-G-C-F) tuning · Also known as Perfect Fourths
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 3 4 2 | – 2 – 3 4 1 | x C D A# E G | medium | |
| x 3 2 3 2 2 | – 2 1 3 1 1 | x C E A# D G | easy · barre on fret 2 | |
| x 3 x 7 4 5 | – 1 – 4 2 3 | x C x D E A# | hard | |
| 8 5 0 0 4 5 | 4 2 – – 1 3 | C D D G E A# | hard | |
| 8 7 0 5 7 5 | 4 2 – 1 3 1 | C E D C G A# | medium · barre on fret 5 | |
| 6 7 0 0 7 7 | 1 2 – – 3 4 | A# E D G G C | medium | |
| 8 7 8 7 7 7 | 2 1 3 1 1 1 | C E A# D G C | easy · barre on fret 7 | |
| 8 10 8 9 0 9 | 1 4 1 2 – 3 | C G A# E C D | medium · barre on fret 8 | |
| x x 10 9 10 9 | – – 2 1 3 1 | x x C E A# D | easy · barre on fret 9 | |
| 10 10 10 12 10 11 | 1 1 1 3 1 2 | D G C G A# E | medium · barre on fret 10 | |
| x 3 0 0 4 5 | – 1 – – 2 3 | x C D G E A# | medium | |
| x 3 2 3 2 x | – 2 1 3 1 – | x C E A# D x | easy · barre on fret 2 | |
| x 5 x 3 4 7 | – 3 – 1 2 4 | x D x A# E C | hard | |
| 8 7 0 0 4 5 | 4 3 – – 1 2 | C E D G E A# | hard | |
| 8 5 5 9 7 5 | 3 1 1 4 2 1 | C D G E G A# | hard · barre on fret 5 | |
| 6 7 0 7 0 7 | 1 2 – 3 – 4 | A# E D D C C | medium |
The C9 chord (Dominant 9) is built from the notes C, E, G, A#, D. Below are playable fingerings for 6-String Guitar – All Fourths 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.