In this audacious book, Ana Mar a Ochoa Gautier explores how listening has been central to the production of notions of language, music, voice, and sound that determine the politics of life. Drawing primarily from nineteenth-century Colombian sources, Ochoa Gautier locates sounds produced by different living entities at the juncture of the human and nonhuman. Her "acoustically tuned" analysis of a wide array of texts reveals multiple debates on the nature of the aural. These discussions were central to a politics of the voice harnessed in the service of the production of different notions of personhood and belonging. In Ochoa Gautier's groundbreaking work, Latin America and the Caribbean emerge as a historical site where the politics of life and the politics of expression inextricably entangle the musical and the linguistic, knowledge and the sensorial.