Twenty Thousand Hertz

In movie musicals, the vocals are almost never recorded live on-set. Instead, the actors pre-record their songs, then lip sync to those recordings while filming. But on Wicked, they threw out the rulebook, and recorded all of the lead vocals live. In this episode, Production Sound Mixer Simon Hayes reveals how they pulled off this audio feat. From cleverly disguised lav mics and in-ear monitors, t...

In the ‘60s and ‘70s, world-class musicians gathered in smoky studios to record tracks that you couldn’t buy in a store… but ended up everywhere. In this episode, Dallas and the TTH crew dive into the golden age of production music: versatile cues crafted for everything from car chases to romantic montages to space odysseys. Along the way, they uncover how these obscure records found their way int...

Sound is a crucial part of what makes Disney parks feel magical… and it all starts inside the closely-guarded rooms of Walt Disney Imagineering. In this episode, Imagineers John Dennis and Greg Lhotka break down how they use music and audio to bring attractions to life, from speaker systems hidden in rock work, to the intricate timing of a Frozen water ride. Then, they reveal the surprising story...

Behind Saturday Night Live, there’s a small army of audio professionals making the whole thing sound effortless. In this episode, Dallas goes behind the scenes at Studio 8H to meet Robert Palladino, who’s mixed SNL for 40 years… and is about to do it one last time. Along the way, he gets an unprecedented look at how this legendary show is mixed, and talks to the new Production Mixer Fred Hedemark...

When a quiz show host asked a simple question about nursery rhymes, it seemed like harmless fun. But that moment triggered a lawsuit that would threaten to bring down one of Australia’s most iconic rock bands. In this story from the Cautionary Tales podcast, we follow the unlikely court case of Men At Work’s “Down Under,” exploring the fine line between inspiration and infringement, and the collat...

We’re proud to present the winning entries from our Listener Stories competition: five listener-made shorts that rose to the very top. From clever tinnitus tonics to melodic subway signals, from mischievous church bells to a guitar that speaks in whispers, this Gold Collection is rich with emotion, originality, and sonic craft. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on ⁠⁠⁠⁠⁠...

It’s one of the quirkiest, most iconic sonic logos ever: a four-note vocal flourish that defined the early internet. In this episode, we follow the Yahoo Yodel on its unlikely journey from the snowy Swiss Alps to ‘90s country bars to Super Bowl ads. Along the way, we meet the real-life cowboy behind this yodel, whose voice launched a billion clicks... as well a high-stakes legal battle. Featuring...

From the springy jump sound to the iconic Overworld Theme, the sound of Super Mario Bros. is instantly recognizable. With just five lo-fi audio channels and 40 kilobytes of space, composer Koji Kondo created a soundscape full of unforgettable melodies. In this episode, we explore how Kondo’s playful instincts, rhythmic trickery, and love of jazz fusion defined the sound of Mario. Featuring Kirk Ha...

Presenting the second collection from our Listener Stories competition, featuring five short pieces written and produced entirely by our audience. From the sonic evolution of pinball to reused classical melodies to the battle against airport noise, this Silver Collection is a diverse and enlightening set of snackable stories. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on ⁠⁠⁠⁠⁠⁠⁠...

When Vulfpeck played a sold-out show at Madison Square Garden, the performance looked effortless. But behind the scenes, their Front of House Engineer and Tour Manager Jake Hartsfield was juggling missing tickets, technical curveballs, and mixing seventeen dynamic musicians through a nearly two-hour set. In this episode, we follow Jake through one extraordinarily high-stakes day, and discover just...

It’s the most recognizable TV theme in America. But Jeopardy’s “Think Music” wasn’t originally written for a game show… It was written for a toddler. In this episode, we trace the unlikely journey of the Jeopardy theme, from Merv Griffin’s living room to over 10,000 episodes across six decades. Along the way, we explore the show’s sonic evolution, including honking buzzers, 80s synths, and orchest...

Twenty Thousand Hertz is proud to present the first collection from our Listener Stories competition, featuring six bite-sized pieces written and produced entirely by our audience. From the dawn of recording to the sonic secrets of thunder, from mythic sirens to melodic medicine, this Bronze Collection offers a first taste of the breadth and originality of these incredible stories. Twenty Thousand...

Your name isn’t just a label. It’s a signal to everyone who meets you, filled with meaning that you may not fully understand. In this story, Dallas revisits one of the most surreal experiences of his life: tracking down five other people who share his exact name. What follows is a surprising look at identity, coincidence, and the curious ways that our names shape our lives. Featuring name expert L...

Behind every incredible sound in a movie or TV show is a creative person with a unique story. In this episode, Dallas heads to the legendary Sony Pictures lot during Mix Magazine’s “Sound for Film & TV” event, and invites Hollywood’s sound pros to share their wildest, weirdest, and most heartfelt sonic stories. The result is a grab bag of eye opening tales that span a World War II reverb, otherwor...

What happens when one of history’s greatest composers begins to lose the very sense he relies on most? In this episode, we explore how Ludwig van Beethoven continued to create groundbreaking music even as his world fell into silence. Along the way, we uncover the myths, inventions, and raw determination that fueled Beethoven’s defiant creativity, and hear how his lifelong struggles are reflected i...

After 10 years and 400 episodes, our friends at Switched on Pop decided it was finally time to revamp their outdated theme song. In this episode, they take us inside the chaotic, hilarious, and surprisingly emotional process of making a new one. Along the way, they get brutally honest feedback from top music critics, craft over a hundred layers of swirling synths and cinematic sound effects, and e...

If you want to know where the future of sound is headed, accessibility is a great place to look. And for decades, Apple has been leading the charge in accessible technology. In this episode, the Apple team breaks down the philosophy and craft behind their most impactful accessibility features. Along the way, we reveal how these innovations have transformed the way we interact with our devices, and...

Movie trailers have changed dramatically over the decades, from the classic “Voice of God” narrators of the ‘80s and ‘90s, to today’s thunderous “bwaahs” and “boojes.” In this episode, Dallas and producer Andrew Anderson take a deep dive into the evolving art of trailer sound design, breaking down the most iconic trends and overused tropes. Featuring legendary trailers from Star Wars to Predator,...

In the late ‘90s, Brian Johnson and Brian Morden were suburban teenagers obsessed with video games and music. And then, through an extraordinary wish, the two friends found themselves on a journey that made gaming history. In this episode, we explore how a single line of dialogue became a timeless piece of Halo lore, and the profound impact it had on everyone involved. Donate to the Make-A-Wish Fo...

What sound can teach us about our Sun? In this episode, we explore how NASA scientists translate electromagnetic waves from the Sun into sound, and even music. Through this process, researchers are gradually unlocking the Sun’s secrets, from the steady “hum” of the star’s rotation, to the way that solar winds “play” the Earth’s magnetosphere like a harp. This story comes from the podcast NASA’s Cu...

In the late '80s and early '90s, a seismic subculture shook the streets… literally. “Boom Cars,” decked out with custom sound systems, roamed neighborhoods blasting the bassiest music ever recorded. But where did this movement come from, and why did it fade away? In this episode, we dive into the world of Miami Bass, dB Drag Racing, and the infamous tapes that could shred your subwoofers. Featurin...

If you turn on the radio, there’s one thing you’re almost guaranteed to hear: a catchy, over the top jingle proclaiming the name and call letters of the radio station. But where did these little tunes come from? Who makes them? And why are they still so common? In this episode, we explore the history of radio ID jingles, and pack in so many earworms, you’re going to need an exterminator. Featuring...

For our fifth annual Mystery Sound Game Show, Dallas invited three friends from the world of professional audio to compete against each other. So crank up the volume and see how many sounds you can guess. Featuring Dialog & ADR Editor Austin Olivia Kendrick, Sound Designer Mike James Gallagher, and Sound Designer Zachary Quarles. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on ⁠⁠⁠...

We all know that dogs are smart, sensitive creatures, but interpreting their vocalizations and behaviors can still be a challenge. In this episode, animal behaviorist Daniel Mills reveals the true meanings behind dogs’ noises, actions, and body language. Then, author Pilley Bianchi tells the story of Chaser, the border collie who became known as “The Smartest Dog in the World” for the way that she...

Cats can be very vocal creatures, but the exact meaning and intention behind these sounds can often be hard to read. In this episode, cat behaviorist Sarah Brown unpacks the hidden meanings behind cats’ vocalizations, body language and behavior. Then, veterinarian Kendra Baker takes us through her journey with Billi (AKA “Her MADjesty”) the cat who became an online sensation for her use of speakin...