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 strings ...
especially on acoustic guitar. It’s harmonically somewhat ‘ambiguous’ because it contains stable-sounding perfect 4ths (G), perfect 5ths (A) and the root note (D) – but no 3rds to make it major or ...