C# 9 Sus4 chord — Open D
2 voicings · Open D
Tuning:DADF#AD
Fret 4 position
1 / 2
Chord tones
C#
R
F#
+5
G#
+7
B
+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#, B, 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.