Songs, pervasive sonic ephemeral acts that combine words and music, live in a contemporary world of commercialization as commodity. Flowing through our everyday lives as a given and oft-underacknowledged artifact to accompany our shopping, car trips, date nights, and gym days. Yet songs have a history as long as humanity and language. They hold a place, up until recently in our evolution, as an oral history library of the human species. Why then...