Congregational worship music has plenty of variety these days. Depending on the church, you could hear traditional hymns, a gospel choir, or arena rock. What's harder to find on a typical Sunday morning is a jazz quartet.
I'm on the road this morning. So I called my husband and asked him to open the fifth window on the Advent calendar. "What it is?" I asked. "Singing," he replied. "Not angels. No heavenly choir. People. People singing."