Madonna is asked her thoughts on Lady Gaga during an upcoming ABC News interview with Cynthia McFadden.

In a promo clip for the interview, Madonna and McFadden are seen chatting in the singer's New York City apartment.

“So Madonna has never had any problem expressing herself to me,” McFadden says in the clip as she walks down a New York City street. “Over the last seven years, we've been to her apartment, even inside her bedroom.”

Seated across from Madonna, McFadden fans a large stack of questions for Madonna from fans: “These are the questions that people wrote in, and we're not leaving here until you answer all of them.”

“Of all of these, there is one question that blew up the Internet. … They want to know what you think about Lady Gaga.”

McFadden is then heard asking, “Is that good?” and Madonna calmly answers, “Look it up,” as she reaches for a cup and the two women smile. (The video is embedded in the right panel of this page. Visit our video library for more videos.)

(The interview will be parted out between ABC's Nightline (on Thursday, January 12), Good Morning America (Friday, January 13) and 20/20 (Friday, January 13)).