Chris Stapleton

Long before their iconic 2015 CMAs performance, Chris Stapleton and Justin Timberlake were pals.

Can you guess which country artist sold the most albums this year?

It was a huge night for him.

This is Stapleton's third lifetime win in the CMA Album of the Year category.

The two vocal titans recorded a new version of Adele's single, 'Easy on Me,' for the deluxe version of her next album.

She's been dreaming of collaborating with Stapleton for a long time!

The news comes four days after the singer and CMA Entertainer of the Year nominee rescheduled a show for Sioux Falls, S.D.

"Joy" finds the pair trying to free themselves from the heaviness of the modern world.

Watch as Jimmy Fallon plays a more than capable support to the country singer.

Her second Christmas album includes three duets with contemporary singers.