Atmosphere's insistence on live instrumentation may ensure that the duo won't reach the sampled glories of their early years again. Still, Southsiders is an improvement over the uneven slacker rap of 2011's The Family Sign. Ant's arrangements have expanded to include the ringing guitar echoes of the title track and the mandolin plucks of "Mrs. Interpret." Meanwhile, Slug moves between the navel-gazing of "Southsiders" and stories with vivid characters like "My Lady Got Two Men." Rap conservatives who dismiss Atmosphere because they're emo "weirdoes" are really missing out.