Columbia subject headings:
National songs--Spain--History and criticism.
Popular music--Spain--History and criticism.
Protest songs--Spain--History and criticism.
Harvard subject headings:
National songs--Spain--History and criticism.
Popular music--Spain--History and criticism
Protest songs--Spain--History and criticism.
Princeton subject headings:
National songs--Spain--History and criticism.
Popular music--Spain--History and criticism.
Protest songs--Spain--History and criticism.