While the annual race to the Christmas number one heats up, one adult website is bringing its own special take to the seasonal spirit. Porn site, Brazzers has released a free Christmas single sung by adult star Kagney Linn Karter.

Along with the single, the site released a music video they describe as being safe-for-work but which features some decidedly raunchy scenes - and cameos from porn stars including AJ Applegate and Dani Jensen.

"We've always heard so much about Santa's exploits on Christmas Eve, but very little about Mrs. Claus who's left back home at the North Pole, so Brazzers decided to delve into the other half of the most popular couple in the world," Gary Ticher of Brazzers said in a press release.

The soon-to-be adult Christmas classic titled, "A Lonely MILF On Christmas," is just the first step of a larger musical plan for the adult media giant. In 2018, Brazzers is planning to bring out its own full album with original songs performed by a roster of its adult stars.

"Kagney is just one of the many Brazzers stars with amazing oral talents such as having an incredible singing voice," Ticher explained. "When we heard her tackle the Christmas song, it was a no-brainer to create a full album of original songs from other Brazzers porn stars."

In the description of the music video, Brazzers explains the plot behind the story: "Ms. Claus is convinced Santa is cheating on her after finding him reading letters from porn stars and it sends her into a jealous fit."

It is not the first time the adult industry has sought to put its mark on festivities. Leading adult site Pornhub's insights section regularly releases data about their users during holidays. Thanks to them we now know that some people search for zombie porn on Halloween while others are after leprechaun fantasies on St Patrick's Day.

You can watch the (fairly suggestive) music video below