was it played during a celebration?
Yes - on July 1, 1980 as part of that year's Dominion Day
O Canada
"O Canada" had served as a "de facto" national anthem since 1939, officially becoming the country's national anthem in 1980 when Canada's "National Anthem Act" received royal assent and became effective on July 1 as part of that year's Dominion Day (today's Canada Day) celebrations.
how many times has the canadian anthem been changed Around 3 times - in June 1990, 2002, 2018 who composed it? Calixa Lavallée when was it officially the country's national anthem ? July 1, 1980
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O Canada [SEP] Introduction
The French lyrics remain unaltered. "O Canada" had served as a "de facto" national anthem since 1939, officially becoming the country's national anthem in 1980 when Canada's "National Anthem Act" received royal assent and became effective on July 1 as part of that year's Dominion Day (today's Canada Day) celebrations.