London-born Cynthia Erivo, with Emmy, Grammy and Tony awards, now looks to acquire EGOT status as a Best Actress Oscar favorite for “Wicked For Good,” the surprising second half of the extravagant film version of the Broadway phenomenon.

While much that matters with “Wicked” is out of the ordinary, it is notable that this final half has triumphed with unexpected new developments both dramatically and musically.

“I knew this would be a life-changing project from the beginning,” Erivo, 38, acknowledged in a virtual press conference, “but I didn’t know the gravity of what it would be.”

She’s buoyed by having a new song. “Whenever I get the chance to dive into music I’m in heaven,” she allowed. “To work on the new song with Stephen Schwartz is an honor. To work with him and the story that is true to Elphaba” – her green “wicked” witch in this riff on “The Wizard of Oz,” – was lovely. To find nuances in the music is a learning curve for me.”

Erivo singles out director John M. Chu for making it all work. “There’s a warmth there that allows him to be able to get at the core of what each character wants.”

As to whether her concept of what’s good and what’s evil – the essential question in “Wicked” – changed while making the film, “I think so,” she said. “I’ve never seen Elphaba as evil. But I learned ‘perception is everything,’ depending on what lens we’re looking through.

“Depending on how you feel about how a person looks, that can shift in how we use the word ‘Good.’ Is it really good? What good actually is. What evil actually is. That is more demystified for me. Perception really shifts how we see good or evil.”

Both parts filmed simultaneously. It was physically demanding with hours in makeup to be green and hours in a harness while singing live “flying” through the sky.

As to her proudest moment, “How to choose?” she wondered. “I’m going to be greedy and give you two. I’m proud of being in the space. Be that grand – and still hone into the moment. And I’m proud of her vulnerability.

“There’s a choice to back from the hurt and pain they both experience but we ran headlong into it. Previously, Elphaba is seen as a strong character and we’ve been able to crack open the real humanity within that.

“This has been the ride of a lifetime. These stories coming from people who have watched this piece warms my heart. It’s a privilege and I think that will remain with me 25, 30 years from now. This wasn’t just an adventure. It changed people in how they think and feel about themselves. That’s really special.”

“Wicked: For Good” opens Nov. 21

Cynthia Erivo returns as Elphaba in “Wicked: For Good.” (Photo Giles Keyte/Universal Pictures)