Until recent times, community singing was thought to have decreased in popularity, suggesting less of a sense of tradition than there used to be.
But in recent years, there have been signs of a revival in community singing, suggesting people want to get involved again.
Christmas is one of the few times people feel they can sing together. Christmas songs are one of the few remaining national repertoires.
As you go in from a cold night into a warm pub full of people who want to share the songs, you gain a deep sense of pride and connection, and you're sharing the traditional with past and future generations.