[artist id="3061469"]Lady Gaga[/artist] has come a long way since the days when she was just aspiring [article id="1649587"]singer/songwriter Stefani Germanotta[/article], so in her "60 Minutes" interview, the superstar tries to give viewers a peek at what life was like before the fame. In a clip from her interview with Anderson Cooper, which is set to air on Sunday, Gaga goes back to her old New York City apartment.

In the beginning of the teaser clip, Gaga and Cooper stand outside of her old building. "How long did you live here for?" Cooper asks, to which she replies, "About three years."

Gaga then attempts to enter her former apartment by pressing all of the buttons, hoping someone will buzz her in. "We're going to do it the New York way ... someone will listen." While they do get inside the building, the current tenant in Gaga's old studio declines to even open the door because of the "60 Minutes" camera crew.

So instead, the superstar goes through an old box of personal mementos while sitting in the building's narrow staircase. The "Born This Way" singer laughs at the sheet music to the very first song she wrote called "Dollar Bills." "This was actually the very first song I ever wrote," she tells Cooper. "I think I was 4."

New York isn't the only place the duo visits during the interview session. Back in October, photos and YouTube footage surfaced on the Internet of the twosome chatting it up in London on the South Bank of the Thames River.

Speaking with "The Insider," Cooper gushed about his time with the pop diva. "I was [article id="1652896"]really interested to meet Lady Gaga[/article]. ... She's obviously a fascinating person," he said. "What's great about '60 Minutes' is you spend a lot of time with the person you're profiling. So to be able to spend a couple weekends with her in various places over the course of several months, it's really cool," he added. "And it's really interesting and I'm learning stuff about her I never saw before."

Mother Monster's "60 Minutes" broadcast airs Sunday at 7 p.m. ET/PT on CBS, right before the [article id="1655841"]53rd annual Grammy Awards[/article], where she's set to perform and is up for six awards.

Are you excited for Lady Gaga's "60 Minutes" interview? Tell us in the comments below!

Don't miss "Snooki & Sway: Live From the Grammys," a red-carpet live stream kicking off Sunday at 6 p.m. ET on MTV.com. And stick with us all Grammy night for coverage of the red carpet, the show, the afterparties and beyond!