WATCH: Ireland and Argentina fans in fine voice as World Cup quarter-final approaches

There's a carnival atmosphere in Cardiff this morning as fans gather to watch the Rugby World Cup showdown between Ireland and Argentina.

Fans of both teams are in high spirits, mixing easily and singing together.

Of course, Irish rugby fans don't need much encouragement to sing.

Anyone watching New Zealand's demolition of France last night would have hears The Fields of Athenry in the background.