The Twelve Days of Christmas is a traditional Christmas song and carol that lists twelve gifts given on the twelve days leading up to Christmas. The twelve days begin on Christmas Day and end on January 5th, also known as Epiphany. The gifts mentioned in the song include things like partridges, gold rings, maids-a-milking, and drummers drumming. It's a popular song during the Christmas season, and people often sing it to celebrate the holiday.