The seasonal songs popular in western music, especially in conjunction with the Christmas season, known as carols, have a rich and complex history full of tradition and controversy in the realms of both sacred and secular music. The concept of singing carols to celebrate holidays developed during the 13th century in France, although what was to be known as carol music had been around from centuries earlier. It is believed that when troubadour Saint Francis of Assisi had made the first Greccio crib, he began to sing songs honoring the Nativity ....