Tim McGraw performs festive country cover of Elvis Presley's 'Blue Christmas'

Tim McGraw has got us all shook up over his surprise rendition of Elvis' classic 'Blue Christmas.'

Helping his fans get in the holiday spirit with some festive tunes, the country singer took to Instagram to share his backstage performance of the holiday classic.

The song, written by Billy Hayes and Jay Johnson, was first recorded by Doye O'Dell in 1948 and made famous by Elvis Presley's recording in 1957.

Alongside the acoustic cover, McGraw wrote: "Had fun backstage with this one a few years ago! #BlueChristmas #Elvis"

He continued: "It’s been a crazy year and we’ve worked hard to put out music, knowing how much it can mean and provide solace in difficult times.

"This is our final chance to thank everyone for sticking with us this year and more importantly, provide some Christmas spirit to you this holiday season."