We've already heard "Lonely Boy," the charged-up new single from the forthcoming Black Keys album El Camino, and we've seen its pretty-great viral video. And now they've let us hear that single's B-side, the comparatively subdued bluesy fuzz-growl "Run Right Back." [videoembed size="full_width" alignment="center"][/videoembed] (via Listen Before You Buy). The "Lonely Boy"/"Run Right Back" 7" single is out in independent ...