Considering all the tensions between the two countries, there was a remarkable moment that happened before the puck dropped on Tuesday's Buffalo Sabres playoff game. 

The woman who tried to belt out the Canadian national anthem was stuck when her mic died as she was singing the tune. And even though neither of the teams involved were from Canada, it sounded like the traditional singing of the song in Buffalo - which attracts many Canucks from across the border - wouldn't happen. 

But then the crowd took over in a moment that might send shivers down your spine.. It was a remarkable and completely unexpected start to the game. 

Sabres' fans show Buffalo doesn't need a mic to sing 'O Canada' during anthem technological difficulty