The reason why people started singing at Christmas came from the angel choir have appeared after coming down on the shepherds in Bethlehem. To proclaim that Jesus was born into this earth.
Within the meaning of the word carol today is significantly different from before, but once carol music is used to dance with shows several times a year. People are dancing in a circle and hold hands and sing.
Dancing such recognizable to viewers of the show reminded Coronet (jewelry sphere-like tiara), which they called Carol in the name of the dance was to a song Carols in Century 16 Carols will be. to sing the Christmas season only.
The Singing Christmas carol is sung by the bishops and believers in the church only. Shortly thereafter, he became a popular Christmas carol by the general public. And was later sung in the streets and places everywhere.