C Add 9 chord — Open D
2 voicings · Open D
Tuning:DADF#AD
Open position
1 / 2
Chord tones
C
R
E
+4
G
+7
D
+2
C Add 9 in other tunings
Add 9 in other keys — Open D
C Add 9 in Open D — video lessons
About C Add 9 in Open D
The C Add 9 chord contains the notes C, E, G, D. In Open D tuning (strings: D–A–D–F#–A–D), the chord shapes differ from standard tuning because the open string pitches change. Open D tuning gives an open D major chord across all strings — ideal for slide guitar and Joni Mitchell-style playing. Diagrams above show all playable shapes in this tuning.