when does the christmas music start

It depends on the year and the country, but generally, the Christmas music starts around November or December, as stores and other public places begin to play festive songs. In some areas, the Christmas season can last from Thanksgiving to New Year's Day, and in others, it can last for a whole month or more. The music is designed to set a festive mood and get people in the holiday spirit, and it's often accompanied by decorations, lights, and other festive elements.