The 12 Days of Christmas is a popular Christmas song that has been sung for many years. The song was first published in 1780 in England and has since become a classic holiday tradition. The song is about a person who is giving a series of gifts to their true love on each of the 12 days leading up to Christmas. The gifts are all related to Christmas, such as partridges, calling birds, French hens, and so on. The song is often sung as a round, with each person singing a different part.