Many of us annually send "Merry Christmas" wishes to friends and family via cards, social media, or in person. The phrase dates back to at least King Henry VIII's reign ("We Wish You a Merry Christmas
" is a traditional English Christmas carol of unknown origin that is believed to date back to the 16th century). However, Sheeran and John's song has a surprisingly rare title. There's "Have Yourself A Merry Little Christmas
," "Merry Christmas Baby
," "Merry Christmas Darling
," "Merry Christmas Everybody
," "Merry Christmas Everyone
," and even "Text Me Merry Christmas
," but when Sheeran checked on Spotify, to his astonishment, he couldn't spot any song simply titled "Merry Christmas."