Transcript for Country's biggest stars catch up with Robin Roberts ahead of CMA Awards
Reporter: Good evening from Nashville and from what is arguably the most famous stage in country music. This is the home of Nashville royalty. As a southern girl, I've always been very proud of my southern roots, and for years, I traveled from state to state, speaking to some of country music's biggest stars. Since we are in music city, what do you say we get right to it? I love robin. I thought she and I had a thing, you know, like a really special thing but then I realized everybody loves robin, so she's like friends with pretty much everybody in Nashville now. My first broadcasting job was spinning country music for a small radio station in Louisiana. But so many legendry country music careers were launched on TV. This adorable young ozzie. That's a 16-year-old Keith urban. To Miranda lambert and Chris young on "Nashville star." But today, "American idol" is the bona fide star maker for country talent. One of the show's biggest stars, Carrie Underwood. ??? I feel right at home ??? Before her reign, she was just another kid in line, aching for that big break. Okay. That was very good. Carrie, you're through to the next round. Welcome to Hollywood, girl. I've never been in an airport before. My dad, on the way to the airport, I was about to cry, and he said, you know, if you want to go home, we can go home and you don't ever have to think about this ever again, and I was like, oh, but I will think about it. So, I have to. The winner of "American idol" 2005 is Carrie Underwood. Reporter: Bring back memories being here on the football field? It does. I was a cheerleader up until my freshman year of high school. Reporter: I visited Carrie's hometown in Oklahoma, just four years after she was crowned "Idol" winner. How has it changed? The town? Reporter: In recent years. There are things that are different. We got another stoplight. We got a new Walmart. We got a new stoplight because of the new Walmart. Reporter: Back then, Carrie opened up about her plans for the future. Do you have a time line that you're thinking about marriage and kids? Oh, gosh, as far as a time line now, it really just depends on what god has planned, you know? It's not -- I can try to make my own plans, I've been doing that my whole life and it's never worked out so I don't know why I'd start now. Reporter: But she did make plans. A year later, she was married to Canadian hockey star Mike fisher and five years later, Carrie had two men in her life, Mike and Isaiah. ??? Now I'm holding what I never knew I always wanted ??? Reporter: And I feel that these two really inspired that track. They did. Reporter: Tell us about it. It's called "What I never knew I always wanted" and that kind of sums it up, both of them, the men in my life. Now I couldn't imagine my life without either one of them. Reporter: She's expecting her second child. Carrie Underwood. Reporter: Recently, she was named CMT's artist of the year. Thank you. Reporter: And she's getting ready for a tour promoting her sixth studio album, "Cry pretty." ??? Cry pretty ??? Reporter: For ten years, we've seen that Carrie Underwood has a lot to cry about, tears of sorrow, tears of joy, tears of gratitude. I'm definitely a very blessed person and try to make the most of those blessings and opportunities as they come and god's just been really good to me. Reporter: As one of country music's biggest talents, Keith urban also counts himself among those blessed. I just come out ready to play. I wait around all day to play. That's what I do. ??? When the sun goes down and the stars come out ??? ??? can you feel it ??? Reporter: Keith urban is as at home in Brooklyn's Barclay center as he is in the global arena. He's New Zealand born, Australian raised, and 100% Nashville. The ground floor of what I do, the base foundation of who I am is a country artist. It's what I grew up playing, so it's the deepest in my DNA. Reporter: It was in 2011 that Keith first invited us home for our third cma special. Is it a struggle to stay sober? It was a struggle to live the life I was living before. Yeah. That's what the actual real struggle is. Reporter: Throughout that struggle, his wife, actress Nicole kidman, has been by his side. If someone who hadn't met Nicole, how would you describe her to them? Extremely pure spirit. A really, really extraordinarily rare, I think, pure spirit. I'll spend the rest of my life trying to find the right words because it's, you know, words are limiting. Reporter: Keith and Nicole celebrated their 12th wedding anniversary this year. We have a real life in the sense that we do the most Normal things, and we don't live on social media all the time. We don't read tabloids so it just floats by us all the time but we don't give it any attention. We just have a real life. Reporter: This year, Keith earned three cma award nominations, album of the year, male vocalist of the year, and entertainer of the year. I mean, all three, good lord. I mean, they represent absolutely. Entertainer is, like, that's -- I've been performing live since I was 7 years old. It's extraordinary to get those nominations. ??? When the sun goes down and the stars come out, can you feel it ??? The best feeling I have is going off and then coming back out for an encore and everybody's still here. If you want a sign if you've connected with an audience, that's it right there. Our thanks to robin and the 52 annual cma awards will air tomorrow night at 8/7 central right here on ABC.
This transcript has been automatically generated and may not be 100% accurate.