Ariana Grande improvises in film

Ariana Grande improvised part of her performance as a singer in the movie "Don't Look Up," the film's director Adam McKay revealed.

The film, which revolves around two astronomers who try to warn humanity about the

approach of a comet that will destroy the Earth, is the most viewed in several countries 

around the world since its premiere on December 24. In the story, Ariana Grande and Kid Cudi play famous pop stars.

In a behind-the-scenes special for the Netflix Film Club, McKay called Ariana's lyrics the "best improvisation" he's ever seen.

"Ariana Grande certainly improvised. In fact, her best improvisation was when she first sang the song.

She was the one who added all that stuff about 'We're all going to die. I couldn't help but include it in the film," said the director.

"And the concert might be one of my favorite moments in the movie: you pretty much 

have the biggest pop star in the world singing beautifully, 'We're all going to die.' 

Every time I watch it, I feel a hilarious cognitive dissonance with it. So, yes, Ariana Grande can definitely improvise," McKay said.

The singer's lyrics for the song "Just Look Up" include, "Look up, what he's really trying to say / Is get your head out of your ** / Listen to the damn qualified scientists."