In this wide-ranging book, Frances Dyson examines the role of sound in the development of economic and ecological systems that are today in crisis. Connecting early theories of harmony, cosmology, and theological doctrine to contemporary media and governance, Dyson uses sound, tone, music, voice, and noise as forms of sonority through which the crises of “eco” can be read. The sonic environment, Dyson argues, is fundamental to both sense and sensibility, and its delimitation has contributed to the “senselessness” of a world now caught between spiraling debt and environmental degradation. Informed by contemporary sound art, philosophy, media and sociopolitical theory, “The Tone of Our Times” offers insights into present crises that are relevant to a broader understanding of how space, the aural, and listening have shaped and continue to shape the world we live in.