The Lowdown: In this winner-take-all economy, the owner class is shrinking faster than you can read a foreclosure notice. Yet, Polo G’s talent for quivery, upwardly inflected sing-rapping made him a homeowner. He has a backyard. He can come and go as he pleases. No more agonizing wait times at apartment security checkpoints; no more having to dodge the prying eyes of too-inquisitive neighbors. On his sophomore album, The Goat, Polo G — who was raised in a squat brick mid-rise on Chicago’s Near North Side or, as he calls it, “the zoo” — marvels at his sudden freedom of movement. But he’s restless and slightly remorseful in his new life. Privacy is one of those benefits that redounds down to the upper, petty bourgeois. As long as his friends on Sedgwick Street are still living under state su...