Most of what Celine Dion produced in her career doesn't fit the government approved list of cultural content, so is considered foreign music. Celine Dion, probably Canada's most recognizable voice and signer, signing in French, a language almost exclusively spoken in Canada on the North American continent, isn't considered Canadian culture.
But some recordings from Elvis do count because he happened to record them on Canadian soil. [0]
[0] https://nationalpost.com/news/extremely-canadian-media-that-...