Omni is the library's online catalogue and includes records for both the physical and electronic collections. Article citations are drawn from periodical indexes and fulltext databases and interfiled with other resources in the search results so once you have performed your search it is best to begin narrowing down the results by choosing the available facets in the left hand column.
ARChive of Contemporary Music: a not-for-profit archive, music library and research center located in New York City, with holdings represented in the Internet Archive.
Canadian Music Centre: resource centre for contemporary Canadian music, mostly of an academic nature and origin, with options for purchasing scores and recordings
Library and Archives Canada Music Collections: audio collection includes documentaries, newsreels, radio programs, and sound recordings such as music, poetry readings, and oral history interviews.
List of Online Digital Musical Document Collections [Wikipedia]: collections of digitized music documents (typically originating from printed or manuscript musical sources). Some contain scanned images, some contains fully encoded scores, some contain encodings adapted for music playback (e.g. via MIDI), and others (e.g KernScores) are adapted for music analysis.
Digital Resources for Musicology: the current megaportal for music resources providing links to substantial open-access projects of use to musicians and musicologists.
Global Jukebox: originating from Alan Lomax's work on music of the world's cultures; a free, non-commercial, educational place for everybody — students, educators, scholars, scientists, musicians, dancers, linguists, artists and music fans, to explore expressive patterns in their own cultural-geographic and diasporic settings and alongside others’
Great 78 Project [Internet Archive]: From about 1898 to the 1950s, an estimated 3 million sides (~3 minute recordings) have been made on 78rpm discs. While the commercially viable recordings will have been restored or remastered onto LP’s or CD, there is still research value in the artifacts and usage evidence in the, often rare, discs and recordings.