Basically, Sonny tunes his guitars to an open tuning- usually open E.
Then, if he wants to play a minor E chord at the twelfth fret, he'll slide the slide up to the twelfth fret, and fret the third string at the 11 fret- he has the action set up so that you can fret behind the slide without the slide touching the string, giving you more than one chord shape. |