There are numerous ways to bring the art of the voice into poetry. We speak. We converse. We inhabit personas and personalities. We wail. We squawk. We squeal. We complain. We rant, rave, and react. We sound off with authority and verve. We simply and merely utter. And this is all the part of the notion of poetic voice. And in all of these varied utterances, we instinctively inhabit multiple registers of diction—high, middle, and low according to the late poet Tony Hoagland (with Kay Cosgrove) in his short, sweet, and very smart book of essays, The Art of Voice: Poetic Principles and Practice…