The aim of this article is twofold: first, to confirm the multi-level linkage between the ecological and social realms in terms of violence, peace, and education, and second, to explore what light ecological thinking can shed on musicking as a potentially effective tool in peace education. The effects of violence in the ecological and social realms are clearly linked, but so are the causes (patterns of thought and behaviors) that lead to violence in each realm; these common causes (which Galtung refers to as "fault-lines") are what need to be addressed, holistically, in peace education. The second aim requires two steps. First, based on meta-analysis of work by ethnomusicologists in diverse cultures, I propose a way of conceiving of human musicking as essentially an ecological behavior, one that has emerged to support the essential process of connecting us to our environment, connecting our inner and outer worlds. Beginning from this conception, I apply recent work in various ecology-related disciplines to show that this characteristic function of musicking makes it well-suited for addressing the root causes of violence in both social and ecological realms. Finally, looking at the challenges and goals of peace education through the lens of ecological thinking, I propose some practical applications, supporting ideas, and suggested models for implementing musicking activities in this endeavor.