" A song is not a tool for changing a human heart in the way that a wrench is a tool for changing a bolt, but it was the tool I had, and I was the tool the OSP had.
The cansos in "Songs from Underneath" were not really as subtle as a wrench. Their primary trope was the ancient trick of making the viewpoint character a victim of oppression, because people identify passionately with a strong viewpoint character, and there is intense pleasure in identifying with the narrator of a sad story or song. In "Black Beauty" that trick had made people begin to think that beating horses was bad; it was the trope that make privileged white children burn with outrage at "Native Son" and prudes weep over prostitutes in "Elle frequentait la rue Pigalle" and "My Name is Not Bitch." They also received, at no extra cost, the delicious smug superiority of sympathizing with an underdog, unlike their less-enlightened neighbors.
Their primary "

― John Barnes , The Armies of Memory (Giraut, #4)