“Don't let the scuzzy surface fool you: at the heart of Megan Remy's one-woman lo-fi project U.S. Girls beats a pop sensibility. When she covered Brandy and Monica's "The Boy Is Mine" on her terrific 2011 album U.S. Girls on Kraak, it wasn't a pice of easy, ironic kitsch so much as an evocative descent into the song's darker themes of jealousy and revenge. Now with "Jack," a Brock Robinson cover an”