Keith Urban knew Carrie Underwood had 'to be the girl' on 'The Fighter'

Keith Urban has had quite a run with his latest album "Ripcord" and the country music star said he owes a lot of that success to Carrie Underwood.

Urban spoke to Fox News about his duet with Underwood and shared his thoughts on the rumors that "American Idol" is returning.

Fox News: How did you pick Carrie Underwood as your duet partner for your song "The Fighter?"
Keith Urban: It’s a combination of a lot of things I think. The spirit is right and her voice is incredible. I love singing with her. I love the way her voice sits with where I sing and this song. When we wrote it, we both just said, "It's Carrie. She's got to be the girl for sure."

Keith Urban (left) and Carrie Underwood perform "The Fighter" at the 52nd Academy of Country Music Awards in Las Vegas, Nevada on April 2, 2017.

Keith Urban (left) and Carrie Underwood perform "The Fighter" at the 52nd Academy of Country Music Awards in Las Vegas, Nevada on April 2, 2017. (REUTERS)

Fox News: What do you think of some buzz “American Idol” might return?
Urban: I loved doing it. I really loved doing it. I miss the camaraderie [of] working with Harry, and Jen and Ryan was really really fun, like family. So you know, if that were to happen in some form, I'd be curious.  But right now...[I'm] full on busy.

Watch Fox News' entire interview with Urban in the video above.