To hear ancient music in an ancient structure amplifies its power. I’m talking about Saturday’s concert of the Cathedral Choral Society, which was held in National Cathedral. Though the church itself isn’t ancient, it was built to feel that way.

National Cathedral was erected in the 20th century, not the 12th. But the building transports you, from the first step over the transom into the crowded vestibule. This impression continues when you look up at the arched ceiling and see the sun slanting in the rose window.

And then the music starts —  “O Come, O Come, Emmanuel,” “Lo, How a Rose E’re Blooming” and “In the Bleak Midwinter” — and the experience is complete.