Ryan Gosling Dreamed Up Project Hail Mary’s Fan-Favorite Scene, Sandra Hüller Reveals

If you watched Project Hail Mary and thought that karaoke bit was a stroke of genius, well, turns out it wasn’t even in the original script—and there’s a bit of a story behind how it all happened. So, let’s talk about Sandra Hüller, Ryan Gosling’s meddling (in the best possible way), and how Harry Styles ended up in space, sort of.

The Scene That Wasn’t Supposed to Be

Sandra Hüller, who you might know from Anatomy of a Fall or—if you’ve got your finger on the pulse—upcoming collaborations with Tom Cruise in Alejandro G. Iñárritu’s Digger, recently sat down for a chat on The Hollywood Reporter’s Awards Chatter podcast. When the conversation turned to that already-famous karaoke moment in Project Hail Mary, she dropped a tiny bombshell: her character, Eva Stratt, was never meant to be crooning a Harry Styles song to begin with.

Here’s Hüller on how it happened (and yes, if you can read between the lines, she’s both bemused and a bit reluctant about it):

"The karaoke scene… it was not in the script. It was scripted that people were having a goodbye party and they were having karaoke, but Eva Stratt wasn’t in it, which I found very reasonable. Because why would she? And then Ryan Gosling came up with the idea, and he wanted her to be in it. And then we had to find a song, and then I found the song, and two days later I was singing it."

So, to recap: there was always going to be a farewell karaoke bash happening in the background, but it was Ryan Gosling who thought, 'Hang on, let’s drag Sandra’s character into the spotlight.' And not just drag her in—make her belt out Sign of the Times by Harry Styles. Because why not?

Not Just for Show

Hüller gets slap-bang to the point about this sort of scene—she sees why people warmed to Eva Stratt after this moment, but she’s got mixed feelings about adding that extra bit of audience-pleasing vulnerability. She admits it’s a bit "calculated," and coming from her background (which, let’s be honest, is a bit more serious than your average sci-fi blockbuster), she’d normally pull back from playing for the crowd like this. But sometimes, even the heavyweights have to admit it works.

• The genesis: Karaoke scene NOT originally scripted for Sandra Hüller’s character
• Ryan Gosling’s move: He suggested Hüller’s character join in and pushed for it to happen
• Song choice: Hüller personally picked 'Sign of the Times'—then sang it two days later
• The payoff: Ended up being a fan-favourite, showing a warmer, more human side of the crew

If you’re wondering about the film’s timeline, Project Hail Mary made its digital premiere on 12 May 2026, and the karaoke scene has been one of the things people can’t stop talking about since.