Consists of open reel tapes of various CBC performances.
Series consists of LPs in 33 rpm which feature Canadian composers, conductors, or performers. Also includes a recording of a composition by Juraj Hatrik set to a poem written by John P.L. Roberts. The Records were collected by Roberts for his personal music library.
Series consists of EPs in 45 rpm which feature Canadian composers, conductors, or performers. The Records were collected by Roberts for his personal music library.
Series consists of video cassettes for the CBC production "Glenn Gould: A portrait".
Series consists of audio cassettes for the International Glenn Gould Conference.
Series consists of photographs of Roberts at various events throughout his career alongside composers, artists and colleagues. There are additional photographs throughout the series which were kept in the file they belonged with.
Subseries consists of records work as chief organizer of World Music Week in 1975 and includes correspondence, planning documents and reports and copies of the official World Music Week program.
Subseries consists of correspondence, programs and records relating to International Music Day. Roberts was the organizer from 1975-1977 and chairman from 1975-1983.
Subseries consists of material relating to national committees of the general assemblies of the IMC such as correspondence, new clippings, and pamphlets.
Subseries consists of material relating international organizations for the IMC General Assembly.