on abc. This young next woman holds the record for the most debuts in history. Taylor swift is one of the world's brightest stars and now she's sitting down for a "nightline" interview with cynthia... See More
on abc. This young next woman holds the record for the most debuts in history. Taylor swift is one of the world's brightest stars and now she's sitting down for a "nightline" interview with cynthia McFadden. Cynthia is here to give us a peek. Good morning. Good north, elizabeth. Sometimes, you just get lucky and that's what happened to me when "glamour" asked if I would like to go to their cover shoot and interview the phenomenal taylor swift. On "glamour" on knew stands NOVEMBER 9th, WE TALKED ABOUT Fame, money on her new album entitled "red." Take a look. ♪ You belong with me ♪ Reporter: She sings of young love. ♪ If it meant a lot "the new Reporter: She sold more than 22 million albums, won six grammys. Thank you, thank you, thank you! Reporter: All at the ripe old age of 22. Welcome to nashville. Thank you. Reporter: When I caught up with taylor swift, she was in the middle of shooting her third cover for "glamour" magazine. I would wear anything that they asked me to, really. You're very compliant. Yeah. You're also very nized. You pick your battles, you know? Is that what it is? Fighting with me on top, that's not a hill I want to die on, on you? Reporter: Her public persona is one of innocence. And inside, accomplished professional and somewhat giddy kid. And this is my favorite thing. Oh, I love those. Those are the two things. I'm for real going to steal them. You are? Reporter: She also may be the most successful singer/songwriter of her generation. You're the number one earning star 30 years old or younger. Beating justin bieber. Oh, yeah, someone told me that. Reporter: Rihanna. Reportedly $56 million last year. That's a lot. Does it feel a little intimidating sometimes? Or not? Part of it it. It's big. It just doesn't feel that. T doesn't feel like a weight. It doesn't feel like my life is in other people's hands and I'm this puppet in all of this. Reporter: In fact, she doesn't feel like that when it comes to her career. She has a new album coming out next month, and the first track has already set records and gone to number one. ♪ I'm never, ever, ever getting back together ♪ Reporter: Who could that be about? We know who it's not about. This summer, the country princess reportedly began a new romance with conor kennedy, the son of robert kennedy jr. There is a lot of talk about you and the kennedys these day. Is there? Reporter: There is. Do tell. Reporter: Reports that you're dating conor kennedy, true? Yeah, I don't talk about my personal life in that great detail. I write about it all in my songs. But when I get in an interview, it just sort of feels -- it's not as much what I do. Talking about it. But I feel like you can share enough of your life in your music to still let people know what you're going through and how you feel and still develop a connection without, you know, talking too many details. Reporter: Ethel kennedy was asked what she would think of having you as a granddaughter-in law-she said, we should be so lucky. She's fantastic. I love her. Reporter: But for all the romance, one very steady relationship is with her music. You have been -- rolling stone said she's one of the few genuine rock stars we've got with a flawlessness that makes a song click. When did they say that? Reporter: June. They said that? Reporter: They did. Recently, too. Wow. Reporter: It's so funny. You're so impressed. I guess for me, I just don't really believe it yet. Reporter: So you are not blase? I try to be sometimes, but it's just hard when you get excited about stuff. ♪ Reporter: There's a lot to be excited about these days. She is truly adorable. And, oh, so talented. Imagine, she wrote every song on every one of her albums. Elizabeth, you mentioned she holds the record for the most top-ten debuts on billboard history, looks like she's poised to do it again. Tonight on "nightline," you'll hear much more from her as well, as well as the debut of her album cover as I go behind the scenes with cindy levy and her team.
This transcript has been automatically generated and may not be 100% accurate.