Rascal Flatts joined in on the fun for the 'CMA Country Christmas' on Monday night (Dec. 2).

The trio performed the song, 'Jingle Bell Rock,' showing off their three-part harmonies, as well as commanding stage presence. They were joined for the song by an impressive horn section, as well as plenty of flashing lights to keep the holiday mood in full swing.

The Flatts juggled time on the road on their Live & Loud Tour with working on a new album this year. They will spend the first part of 2014 touring as well, performing across the United States, as well as overseas, including stops in Ireland and the UK. See all of their upcoming shows here.