A GLASGOW audience has been called "undefeatable" after a top indie band asked for quiet, only for the crowd to break into the country's national anthem.

Indie folk band Mumford and Sons played the OVO Hydro on Tuesday night, and asked for quiet ahead of a slower song.

This lead to a magical moment shared by the Hydro's official social media accounts showing the crowd sing Flower of Scotland as lead singer Marcus Mumford held a Saltire.

As the crowd wraps up the song and applauds themselves, Mumford states: "That was a treat for us, thank you so much. But this time, I'm serious, thank you so much for being here, but shut the f*ck up."

The audience can be heard laughing.

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A post shared by OVO Hydro (@ovohydro)

The OVO Hydro shared the clip writing: "Sorry @

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