The Buffalo Bills had the band Barenaked Ladies sing "O Canada" at Highmark Stadium's inaugural opener despite no Canadian team being involved, sparking fan backlash.
https://www.foxnews.com/outkick-sports/singing-canadian-national-anthem-buffalo-bills-home-opener-mistake
https://www.foxnews.com/outkick-sports/singing-canadian-national-anthem-buffalo-bills-home-opener-mistake