Columbia subject headings:
Computer music--History and criticism.
Electronic music--History and criticism.
Music--20th century--History and criticism.
Radio and music.
Harvard subject headings:
Computer music--History and criticism.
Electronic music--History and criticism.
Music--20th century--History and criticism
Radio and music.
Princeton subject headings:
Computer music--History and criticism.
Electronic music--History and criticism.
Music--20th century--History and criticism.
Radio and music.