With their songs of traintracks and setbacks, leaving and longing, the Lost Cartographers fit well into Chicago’s always vibrant alt.country and Americana scene. But check out one of their shows and you’ll discover a sound that lives in the margins of half a dozen genres, from the melancholy beauty of “Metronome” and “Killing Time in Nashville” to the hillbilly stomp of “Goodbye Ohio” (on which drummer Jason Haaheim plays a metal washtub), and from the retro folk-rock of “Walk On” to the the feedback-soaked psychedelia of “Golden Record.”