EXCLUSIVE: Alicia Keys Talks Empowering 'Queen of Katwe' Soundtrack

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Alicia Keys dished to ET on Wednesday about extending her message of girl power by providing the music for Queen of Katwe.

Her new single, "Back to Life," is already climbing the charts for its beautiful depiction of the experiences documented in the Disney film, starring Lupita Nyong'o.

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In the movie, the Oscar winner plays the mother of a Ugandan girl who sees her world rapidly change after being introduced to the game of chess.

"My favorite part in the movie is when she wins the award for the best boy chess player," Keys told ET. "I'm like, 'That's right!'"

One of the lessons taught in the film is to believe in yourself, which Keys told ET is an ongoing process, even for a superstar like her.

WATCH: Lupita Nyong'o Brings the True Story of the 'Queen of Katwe' to Life in First Trailer

"Part of the process of finding your self-confidence is also part of finding yourself," she explained. "We don't always feel magnificent and spectacular."

Regardless of how she feels, Keys always looks spectacular, even without makeup. The GRAMMY winner has been going au naturel as of late, and made headlines with her barefaced look on the MTV VMA red carpet last month.

"We battle with the stereotypes that the world puts in our minds: 'Are we thin enough?'" Keys said. "I think part of it is actually honoring like, 'Yeah, I am insecure,' and that's part of what makes you stronger."