While much social science literature has analyzed the cultural bases of social movement, activity, and the content of cultural production by social movements, relatively little has been written about the concrete social relations within which social movements do culture. This paper addresses the issue of what social movements are doing when they produce culture. Four dimensions of social relations within which culture is enacted are identified: the division of labor, the relations of power, tuning in, and embeddedness. A contrast between the how the People's Songsters Movement of the 1930s and 1940s and the Civil Rights Movement of the 1960s used American folk music illustrates how variation in these dimensions affects the effects that cultural production had on social movement outcomes.