C9 chord on 4-String Bass – Drop D
in Drop D (D-A-D-G) tuning
C9
Dominant 9
Notes:C · E · G · A# · D
Piano Left hand Right hand
Fingerings (8)
C9 shapes as text
| Shape | Frets | Fingers | Notes | Difficulty |
|---|---|---|---|---|
| 0 3 2 3 | – 2 1 3 | D C E A# | easy | |
| 0 7 8 5 | – 2 3 1 | D E A# C | medium | |
| 10 7 8 7 | 3 1 2 1 | C E A# D | medium · barre on fret 7 | |
| 2 3 0 3 | 1 2 – 3 | E C D A# | easy | |
| 8 7 0 5 | 3 2 – 1 | A# E D C | medium | |
| 8 7 10 7 | 2 1 3 1 | A# E C D | medium · barre on fret 7 | |
| 0 1 2 5 | – 1 2 3 | D A# E C | hard | |
| 2 1 0 5 | 2 1 – 3 | E A# D C | hard |
The C9 chord (Dominant 9) is built from the notes C, E, G, A#, D. Below are playable fingerings for 4-String Bass – Drop D 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.