This collection of essays is driven by the proposition that environmental and cultural sustainability are inextricably linked. The authors are unified by the influence of the pioneering work of Jeff Todd Titon in developing broadly ecological approaches to folklore, ethnomusicology, and sustainability. These approaches lead to advocacy and activism. Building on and responding to Titon's work, the authors call for profoundly integrated efforts to better understand sustainability as a challenge that encompasses all living beings and ecological systems, including human cultural systems. While many of the chapters address musicking and ecomusicology, others focus on filmmaking, folklore, digital media, philosophy, and photography. Organized into five parts, Part 1 establishes a theoretical foundation and suggests methods for approaching the daunting issues of sustainability, resilience, and adaptive management. Part 2 offers five case studies interpreting widely divergent ways that humans are grappling with ecological and environmental challenges by engaging in expressive culture. Part 3 illustrates the role of media in sustainable cultural practices. Part 4 asks how human vocal expression may be central to human self-realization and cultural survival with case studies ranging from the digital transmission of Torah chanting traditions to Russian laments. Part 5 embraces Titon's highly influential work establishing and promoting applied ethnomusicology, and speaks directly to the themes of advocacy and activism.