C mMaj 7 b5 chord — Open D
3 voicings · Open D
Tuning:DADF#AD
Open position
1 / 3
Chord tones
C
R
D#
+3
F#
+6
B
+11
C mMaj 7 b5 in other tunings
mMaj 7 b5 in other keys — Open D
C mMaj 7 b5 in Open D — video lessons
About C mMaj 7 b5 in Open D
The C mMaj 7 b5 chord contains the notes C, D#, F#, B. 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.