It was a custom of the Pagans to celebrate on 25 December the birthday of the Sun, at which they kindled lights in token of festivity.
In these solemnities and revelries the Christians also took part. Accordingly when the doctors of the Church perceived that the Christians had a leaning to this festival, they took counsel and resolved that the true Nativity should be solemnised on that day.
As pagans, we can therefore continue the original tradition, without being burdened by the later Christian interpretation.
Nice music to listen to during these days …