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Credit: New Line Cinema

Rampage composer used real ape sounds in film's score

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Apr 13, 2018, 9:33 AM EDT

It turns out there are more monkeys in Rampage than just the ones you see on screen. Composer Andrew Lockington used the sounds of actual apes in the score of the film about primatologist Davis Okoye (played by Dwayne Johnson) who befriends a gorilla named George.

In an interview with THR's Heat Vision, Rampage composer Andrew Lockington revealed some behind-the-scenes info on creating the score for the film, including how he planned to use the hums of real gorillas in the score of the film after reading about them in National Geographic. But instead he ended up using sounds from howler monkeys.

"Ultimately, the humming wasn't that interesting, but during the recording session one of the zookeepers said, 'Well, they're nothing like the howler monkeys of Costa Rica.' I thought, 'Oh, that’s interesting.' Next thing you know, I'm flying down to Costa Rica to record the howler monkeys and run them through modular synths. It really provided for some great sounds," said Lockington.

If you've never had the pleasure of listening to howler monkeys in Costa Rica, luckily there are plenty of videos on YouTube to give you the full experience. Like this one.

Pretty amazing, right? Lockington also used some other tricks, like expanding the voices of a choir to sound like space. In general, the film uses some cool visual tricks as well, like performance capture with actor Jason Liles, who plays the gorilla, George, who goes on the, umm, Rampage.

Good luck getting those howler monkey noises out of your head.

Rampage roars into theaters April 13.

(via THR)