Christmas music typically starts playing on the radio around late November or early December, depending on the radio station and its programming. It's a time when many people start feeling the holiday spirit and want to hear the familiar carols and songs that celebrate the season. Some stations may begin playing Christmas music as early as Halloween, while others may wait until after Thanksgiving. The timing can also depend on local traditions and events, such as tree lightings or parades, that kick off the holiday season in your area.