If you grew up in Canada anywhere near 1979 and watched more than three minutes of TV, you saw this often. I hadn’t for a very long time, though, and it’s just so…National Film Board of Canada.
The lovely voices are Kate and Anna McGarrigle, sisters from Québec (but of obviously Scots descent). Is it scary that I not only know they aren’t singing “whirling down white water”, but actually know what “birling” means? 😀