No matter where you are, the national anthem is a big deal.

The Toronto Maple Leafs and Nashville Predators stand at attention during the national anthems prior to their NHL game at Air Canada Centre in Toronto on Tuesday. During a sound malfunction, the crowd sang the U.S. national anthem. (Photo: Bruce Bennett/Getty Images)

It seems that the U.S.' national anthem is even a big deal in Canada. That's right, even in Canada!

On Tuesday during the Nashville Predators-Toronto Maple Leafs NHL game in Toronto, there was a bit of a microphone problem.

Singer Michelle Madeira had already completed the Canadian anthem, "O Canada." But when she got to "The Star-Spangled Banner," the mic started cutting out. That was when Maple Leafs fans decided to help her out and took over the singing of our anthem.

A very cool moment!