“Night Moves,” the latest book by music (and cultural) critic Hopper, is straight out of her journals from 2004 to 2009. She saw Chicago’s institutions and infrastructure as “¼ nature, ¼ trash, ¼ industrial, ¼ gleaming rehab.” She saw the people, though, as one of a kind,  although they often fell into loose crews of post-adolescents. She dove into a boho lifestyle, but has a sharp sense for when to insert higher-brow references, especially when describing how her part of the city was undergoing gentrification. This exercise in memoir-by-essay may be all the better at capturing raw urban vitality because of the author’s choice not to push for the maximum possible rawness. What’s here is plenty.