A# Augmented chord — Open G

About A# Augmented in Open G

The A# Augmented chord contains the notes A#, D, F#. 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.