Music, and folk music in particular, is often embraced as a form of political expression, a vehicle for bridging or reinforcing social boundaries, and a valuable tool for movements reconfiguring the social landscape. Reds, Whites, and Blues examines the political force of folk music, not through the meaning of its lyrics, but through the concrete social activities that make up movements. Drawing from rich archival material, William Roy shows that the People's Songs movement of the 1930s and 40s, and the Civil Rights Movement of the 1950s and 60s implemented folk music's social relationships--specifically between those who sang and those who listened--in different ways, achieving different outcomes.