This ^^^^ easily
Can’t believe that nobody has said Justin Bieber or Nickleback.
On a more serious note - by sheer popularity Celine Dion should be mentioned. Others missed include: Paul Anka, Bryan Adams, K.D. Lang and Bruce Cochburn.
On a personal note - I liked some of the odd music that came out of Canada in the 80’s and early 90’s - Rough Trade, Loverboy and Heart come to mind. I believe a group named the Box also came out of Montreal in this period - their music was unique but sometimes good.