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 ...

Once you've whetted your appetite for open tuning experimentation, your acoustic guitar having long forgotten the vanilla pleasures of EADGBE ... fingers to fret the notes on the sixth and ...