During the Christmas period, you'll no doubt be surrounded by festive tunes - and one song you'll likely be singing along to is the classic 12 Days of Christmas . How well do you remember the 12 Days of Christmas? During the festive season, it's impossible to avoid the classic tunes, from Mariah Carey's All I Want For Christmas , to traditional carols like O Holy Night. Another classic, which is steeped in biblical history, and challenges our memories every year, is The 12 Days of Christmas.