Watch the Artful online guitar lesson by Adam Levy from 50 Low-Down Rhythms You MUST Know
In the 1st bar of this lick, a succession of descending 6th intervals hints at alternating E and D triads. We get the flavor of an E7 without sounding the chord outright. The harmony is more clearly outlined in the next bar. Also notice how bar 1 emphasizes upbeats, while bar two is more about downbeats - especially beats two and four.