A# Maj 11 b9 chord — Open G
1 voicing · Open G
Tuning:DGDGBD
Open position
1 / 1
Chord tones
A#
R
D
+4
F
+7
A
+11
B
+1
D#
+5
A# Maj 11 b9 in other tunings
Maj 11 b9 in other keys — Open G
A# Maj 11 b9 in Open G — video lessons
About A# Maj 11 b9 in Open G
The A# Maj 11 b9 chord contains the notes A#, D, F, A, B, D#. 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.