The live broadcast of the Service of Nine Lessons and Carols from Kings College, Cambridge, UK has become a Christmas Eve tradition at our house. No sermon, no proselytizing, just a series of Christmas carols/anthems interspersed with readings from the KJV, all with fantastic British accents and sung by one of the best choirs in the world. It's listened to/watched by millions across the UK (and now the world via streaming), and always begins with the director tapping one of the boy choristers on the shoulder just as the mics go live, to sing the first verse of "Once In Royal David's City" solo a cappella.
If you appreciate any kind of music, really, it's worth listening to. Though tickets are hard to get, hearing it in person in the gorgeous 16th-century Kings College chapel is a bucket list item for me.
Here's today's service. Hope all you Surly folks have a great Christmas: https://www.bbc.co.uk/sounds/play/m0012r7b