C 9 Sus4 chord — Open D
3 voicings · Open D
Tuning:DADF#AD
Open position
1 / 3
Chord tones
C
R
F
+5
G
+7
A#
+10
D
+2
C 9 Sus4 in other tunings
9 Sus4 in other keys — Open D
C 9 Sus4 in Open D — video lessons
About C 9 Sus4 in Open D
The C 9 Sus4 chord contains the notes C, F, G, A#, 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.