Columbia subject headings:
Music--Yemen (Republic)--History.
Vocal music--Persian Gulf Region--History and criticism.
Vocal music--Yemen (Republic)--History and criticism.
Harvard subject headings:
Vocal music--Persian Gulf Region--History and criticism.
Vocal music--Yemen--History and criticism.
Princeton subject headings:
Vocal music--Persian Gulf Region--History and criticism.
Vocal music--Yemen--History and criticism.