Watch the Dorian Dance online guitar lesson by Brad Carlton from Chord Studies: Modal Progressions Vol. 1
This two chord vamp has a Dorian feel to it. We also use quartal harmony. Quartal harmony means stacked 4ths instead of the standard harmony that stacks 3rds. 4ths harmony tends to give you a very modern sound. We are playing this on the 2nd, 3rd and 4th strings and the third finger is a guide finger.