The We Belong Together hitmaker is in the early stages of making a screen adaptation of her 2020 memoir, The Meaning of Mariah Carey, with her Precious director Lee Daniels.
While the leading star of a musical biopic typically acts and sings in the role, that won't be the case with this project as Mariah wants to do the vocals herself.
"Personally, I want a great actress," she told NME. "I don't think she has to be a great singer because I can sing all my songs the way I would as a little girl... One of the things people don't know is that I do impressions. I can sound like me when I was younger. I've watched a lot of movies and adaptations of people's life stories and I'm like, 'Why wouldn't they just use that person's voice?' I don't wanna hear somebody else singing like The Great! I really don't!"
Mariah first revealed that she was talking to "a secret friend" about adapting the memoir into a limited series or feature film last December.
"People have also been reaching out to me about it... people I haven't heard from in years saying this has to be a series or a movie or whatever it's going to be," she told The Hollywood Reporter. "These things take a long time, so it's going to be what it is, but I believe in it. I'm really looking forward to it even just as a viewer, seeing these stories come to life."
Daniels later confirmed to The Guardian in February that he was adapting it into a miniseries.