The musicians' playful banter has continued years after they worked alongside each other on the NBC singing competition.
The country star's first spring collection with the lifestyle brand Lands’ End debuted Monday (Feb. 27).
The country star shared that the show "changed my life in every way it possibly can, from a personal standpoint and obviously from a career standpoint."
Clarkson injects the "Honey Bee" Kellyoke cover with an appropriate country twang.
"Even though I'm a stepparent, I take that job very seriously. The kids see me as a very important person in their life," the country singer said.
"It's mine and Blake's last season... I can't even get the words out of my mouth 'cause it sucks."
The recording spotlights the work of organization Miraculous Love Kids, a nonprofit music school.
The country star revealed that season 23 of 'The Voice' will be his last as coach.