Songfacts®:

• This is the only original track off Christina Perri's holiday EP, A Very Merry Perri Christmas. The singer penned the song with her musician brother Nick Perri, the former lead guitarist of Shinedown. She explained in a statement "This EP is a collection of my all-time favourite Christmas songs, plus one original, 'Something About December' which my brother and I wrote about finding Christmas wherever you are in the world, because it lives in your heart."
• Perri started writing this song while on tour in Singapore in mid April 2012. She was sitting alone in her hotel, missing her family and decided to cheer herself up by listening to some of her favorite Christmas tunes. Inspired by the music making her feel back at home, Perri decided to write her own song about keeping Christmas in your heart all year round. The "Jar Of Hearts" singer finished writing the tune with her brother's help a few months later, and she twice broke into tears as the pair reminisced.
• The lyric about "mama's whistling" is a memory of one of the things Perri loves most about the holiday season. "She's always whistling Christmas songs," the singer told CBS Local. "That's the sound of my house."
• The song's music video was shot in Los Angeles and directed by Elliot Sellers. It sees Perri sharing some home videos from her childhood.
• Summer in Los Angeles is not conducive to getting into the holiday spirit, so while recording A Very Merry Perri Christmas, Christina Perri decided to help set the mood with a few festive knickknacks. "I have so much Christmas spirit all year round, so it's fine for me," she told CBS Local. "But to get my band and my crew and the producers in the spirit we had a Christmas tree, lights and fake snow."
  Not only that, Perri also forced everyone in the studio to wear Santa hats and she even bought a Santa Claus toilet for them to use!