Columbia subject headings:
Harvard subject headings:
Copland, Aaron, 1900-1990--Criticism and interpretation.
Copland, Aaron, 1900-1990. Songs.
Villa-Lobos, Heitor--Criticism and interpretation.
Villa-Lobos, Heitor. Songs
Princeton subject headings:
Copland, Aaron, 1900-1990--Criticism and interpretation.
Copland, Aaron, 1900-1990. Songs.
Villa-Lobos, Heitor--Criticism and interpretation.
Villa-Lobos, Heitor. Songs.