… later for Pickering, Ont., native Shawn Mendes to do the … an unstable decade for Canadian festivals, with headliner prices … songwriter and poet sprouted across Canada and beyond. (Kate … though. Twain swept the Canadian Country Music Association Awards in …… later for Pickering, Ont., native Shawn Mendes to do the … an unstable decade for Canadian festivals, with headliner prices … songwriter and poet sprouted across Canada and beyond. (Kate … though. Twain swept the Canadian Country Music Association Awards in …