Mariah Carey will do her first sit-down interview since her emotional breakdown with ABC News' Barbara Walters.

The interview is scheduled to air on 20/20 at 10 p.m. EDT Sept. 12.

The 31-year-old pop singer was treated at a Connecticut clinic earlier this month and has been with her mother, under a doctor's care, since her release.

Carey said she was exhausted after working on two movies Glitter, opening Sept. 21, and Wise Girls, due out next year as well as the soundtrack for Glitter, which hits stores Sept. 11.

The Grammy winner recently posted a voice message on her Web site for her fans: "Hey guys, I'm just checking in, letting you know that I love you. I'm reading the letters you wrote me, and you always make me smile, no matter what. I'll call you soon, bye."

Carey last sat down with Walters after her divorce from Sony Music chief Tommy Mottola in November 1998.