Sorry, I should have said of course that Americans could multiply the Can. population by 10 -- 300 million.

I should also have said that I did a little looking around Professional Music Associations, and couldn't find any raw numbers. If my classical friend is roughly right, and with some overlap, and lots more people playing folk or electric guitar, or Hammond organ in the home or whatever -- I wonder if 500,000 is a good number for Canada -- 1 in 60 about. That seems far too high certainly for classical music, but with everyone else added in? I really have no idea. Just guessing.
yours, Peter T.