Huw Watkins pens carol for Kings College, Cambridge concert
It is one of the biggest events of the festive calendar - the concert held by the choir of Kings College, Cambridge.
Broadcast on TV and radio, it reaches people around the world.
Work by a Welsh composer will be performed alongside more traditional carols.
Huw Watkins has written a two minute carol - the words in Welsh - which will join the service of Nine Lessons and Carols on Christmas Eve.