C 7 b9 #5 chord — Open G
1 voicing · Open G
Tuning:DGDGBD
Fret 5 position
1 / 1
Chord tones
C
R
E
+4
G#
+8
A#
+10
C#
+1
C 7 b9 #5 in other tunings
7 b9 #5 in other keys — Open G
C 7 b9 #5 in Open G — video lessons
About C 7 b9 #5 in Open G
The C 7 b9 #5 chord contains the notes C, E, G#, A#, C#. In Open G tuning (strings: D–G–D–G–B–D), the chord shapes differ from standard tuning because the open string pitches change. Open G tuning lets you play a G major chord across all open strings — widely used in blues and slide guitar. Diagrams above show all playable shapes in this tuning.