Columbia subject headings:
Musicals--Excerpts--Librettos.
Popular music--United States--Texts.
Revues.
Harvard subject headings:
Musicals--Excerpts--Librettos.
Notated music
Popular music--United States--Texts
Songs, English--United States--Texts
Princeton subject headings:
Musicals--Librettos--Excerpts.
Popular music--United States--Texts.