Villancicos are traditional Spanish Christmas carols that originated in the late Middle Ages. Initially, they were secular songs sung in the vernacular, but over time, they evolved to include religious themes, celebrating the birth of Jesus Christ. These songs are characterized by their simple melodies and repetitive structures, making them easy to sing. Typically performed during the Christmas season, Villancicos are often accompanied by instruments like guitars and tambourines. They are an important part of Spanish and Latin American holiday traditions, bringing communities together in festive celebrations and reflecting the cultural heritage of the regions where they are sung.