A# mMaj 7 bb5 chord — Open G
3 voicings · Open G
Tuning:DGDGBD
Open position
1 / 3
Chord tones
A#
R
C#
+3
D#
+5
A
+11
A# mMaj 7 bb5 in other tunings
mMaj 7 bb5 in other keys — Open G
A# mMaj 7 bb5 in Open G — video lessons
About A# mMaj 7 bb5 in Open G
The A# mMaj 7 bb5 chord contains the notes A#, C#, D#, A. 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.