A new featurette shows the incredible transformation Rami Malek underwent to become Freddie Mercury for the upcoming “Bohemian Rhapsody” movie.

The video, which was released on the official Queen YouTube page, includes behind-the-scenes footage of the “Mr. Robot” star as he works with costume designers and choreographers to help channel the legendary Queen frontman.

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“When you set out to play Freddie Mercury, you think, How am I ever going to fill those shoes?” Malek says in the clip. “It’s an immense responsibility but one that I was very eager to take on.”

Those huge shoes Malek talks about filling are not just metaphorical, as he explains he literally had to learn to walk in 4″ heels. In total, the 37-year-old actor reveals he spent over 50 hours doing costume fittings, which included tight satin pants and an “entire lycra outfit.”

“When you dress as Freddie, it makes every day feel like it’s going to be a good time,” Malek says.

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However, becoming Mercury wasn’t just about a new wardrobe, Malek also had to learn his mannerisms and so, worked with a “movement coach” to help perfect his head turns, eye looks, and microphone flicks.

“You don’t want to mimic Freddie,” Malek explains, “you want to be able to understand why he did what he did.”

“Bohemian Rhapsody” opens in theatres November 2.