The Twelve Days of Christmas is one of the most recognized songs in the world, but it was a song that dates back to the 18th century. For this reason, I could not find the original :) What I was really interested in knowing, however, was what is the meaning of the song? This is what I found:
"The twelve days in the song are the twelve days starting Christmas Day, or in some traditions, the day after Christmas (December 26) (Boxing Day or St. Stephen's Day, as being the feast day of St. Stephen Protomartyr) to the day before Epiphany, or the Feast of the Epiphany (January 6, or the Twelfth Day). Twelfth Night is defined by the Oxford English Dictionary as "the evening of the fifth of January, preceding Twelfth Day, the eve of the Epiphany, formerly the last day of the Christmas festivities and observed as a time of merrymaking."
No one, however, seems to agree on why those gifts.