Rhythm constitutes an untapped resource for understanding poetry, making legible a range of ways poetry affects us that cannot be parsed through the traditional resources of poetic theory. Rhythm has rich but also problematic roots in nineteenth-century notions of primitive, oral, communal, and sometimes racialized poetics. But there are reasons to understand and even embrace its seductions, including its resistance to lyrical voice and even identity. Pressing beyond poetry handbooks' isolated descriptions of technique, the book asks what it means to think rhythm.