Hallmark's "Countdown to Christmas" just got a whole lot more festive, thanks to Gwen Stefani and OneRepublic's Ryan Tedder.

Stefani recorded a new, original song called "Here This Christmas," which was written and produced by Ryan and his OneRepublic bandmate Brent Kutzle.

The song, out Friday, will serve as the theme music for "Countdown to Christmas," Hallmark's annual slate of holiday movies.

"Grateful to have worked with Ryan Tedder on this one!" Stefani wrote on social media.

Stefani also recorded a new version of the classic "Sleigh Ride," also produced by Ryan and Brent, along with Brandon Collins.

Both songs are included on a new digital reissue of Stefani's 2017 holiday album "You Make It Feel Like Christmas." The album was previously reissued in 2018 with five additional songs.

It's already been a big week for the singer, who took home the collaborative video of the year award at the CMT Music Awards on Wednesday. The award was for the visual of her duet with partner Blake Shelton, "Nobody But You."

"Wow weeeeeee NEVER IN MY WILDEST DREAMS?!!!!!! thank u to everybody that listened and voted, we see you guys out there working hard for us and we appreciate it!!" she wrote on Instagram about the fan-voted award.