Open G tuning is an alternate tuning favored by Keith Richards and requires the guitar to be tuned to D-G-D-G-B-D. To retune into open G from standard tuning, drop the sixth, fifth and first ...
We can use the open-tuned strings as a ‘drone ... Play what would be an A7 barre chord in standard tuning and you get this interesting Csus2/G chord. The G is our bottom note on the sixth ...