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