EXAMPLE4 BLUES - ‘DELTA’ 7THS AND SLIDING 6TH/9THS

Here's some gritty three-string 7th voicing, like you'd find in the fingerstyle playing of Robert Johnson, with the more up-town sophisticated sliding 6th to 9th forms that you might find in the playing of T-Bone Walker, but filtered down over the years to artists ranging from Stevie Ray vaughan to Steely Dan.