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Before we get started, a quick heads-up. This episode talks about video game violence and scary monsters.

It's nothing too intense, but if you have small kids, they might not really like it.

So if you have little ears around, I'll give you a few seconds to pause.

Okay, are they gone?

Here we go.

You're listening to 20,000 Hertz.

I'm Dallas Taylor.

Monster movies have been around since the earliest days of cinema.

Movies like Nosferatu, The Golem, and Phantom of the Opera were some of the biggest hits of the silent film era.

But once movies got sound in the late 1920s, these creatures were brought to life with creative and terrifying sound design.

That was the roar of King Kong from back in 1933.

King Kong's voice was famously made by mixing the growls of lions and tigers.

Then what they did was reverse the tape.

And sprinkled in a few human grunts.

Here's our modern recreation.

20 years later, we were introduced to Godzilla, whose iconic roar was made by sliding a leather

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