A 7 b9 #9 chord — Drop D
1 voicing · Drop D
Tuning:DADGBE
Fret 10 position
1 / 1
Chord tones
A
R
C#
+4
E
+7
G
+10
A#
+1
C
+3
A 7 b9 #9 in other tunings
7 b9 #9 in other keys — Drop D
A 7 b9 #9 in Drop D — video lessons
About A 7 b9 #9 in Drop D
The A 7 b9 #9 chord contains the notes A, C#, E, G, A#, C. In Drop D tuning (strings: D–A–D–G–B–E), the chord shapes differ from standard tuning because the open string pitches change. Drop D lowers the low E string to D, making power chords and D-root chords easier to play. Diagrams above show all playable shapes in this tuning.