C Augmented chord — Open D
3 voicings · Open D
Tuning:DADF#AD
Fret 10 position
1 / 3
Chord tones
C
R
E
+4
G#
+8
C Augmented in other tunings
Augmented in other keys — Open D
C Augmented in Open D — video lessons
About C Augmented in Open D
The C Augmented chord contains the notes C, E, G#. 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.