This is contemporary a cappella gospel, so consider yourself forewarned. It's high energy, flings the melody all over the parts, and does what I think of as the "Barry Manilow" modulation, up a half-step. At the same time, it's fun listening and you've got to admire the technique even if it's not your cup of polyphony!
This charming piece is about a beginning singer - listen for his sol-fa syllables. These villancicos were the highlight of the Baroque Christmas Eve, where the Matins of the feast played the role later taken on by the Midnight Mass. They were interspered with the psalms of Matins. And I regret to report that folks often hung out in the courtyard outside the church until someone told them that another villancico had started! Then they would rush in. The clergy strongly disapproved.
Just enjoy the lovely singing of the Coro Exaudi de la Habana.