Twenty Thousand Hertz
The stories behind the world’s most iconic and fascinating sounds.
Episodes
September 10, 2025 • 28 mins
We’re proud to present the winning entries from our Sound Off competition: five listener-made short stories 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.
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If you know what this week's myste...
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August 27, 2025 • 25 mins
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 musician and yodeler Wylie Gustafso...
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August 13, 2025 • 33 mins
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 Hamilton of Strong Songs and Thomas o...
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July 30, 2025 • 30 mins
Presenting the second short story collection from our Sound Off competition, featuring five pieces written and produced entirely by our listeners. 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.
Find local showtimes to see Sketch, the first feature-film sound designed and mixed entirely by Defacto ...
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July 16, 2025 • 38 mins
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 how much craft, preparation, and c...
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July 2, 2025 • 25 mins
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 orchestral remixes. Featuring Lisa Broffma...
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June 18, 2025 • 31 mins
Twenty Thousand Hertz is proud to present the first short story collection from our Sound Off competition, featuring six bite-sized pieces written and produced entirely by our listeners. 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.
Subscribe on YouTube to be the first t...
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May 28, 2025 • 43 mins
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 Laura Wattenberg and six Dallas Tayl...
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May 14, 2025 • 28 mins
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, otherworldly insects, famous fart sounds, a...
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April 30, 2025 • 28 mins
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 in his music. Featuring musicologist...
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April 16, 2025 • 41 mins
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 even get some sonic strategy from ou...
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April 2, 2025 • 33 mins
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 could even lead to a revolution in...
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March 19, 2025 • 24 mins
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, plus an intimidating encounter with...
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March 5, 2025 • 43 mins
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 Foundation and Brian Morden Foundati...
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February 19, 2025 • 34 mins
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 Curious Universe, and features Host a...
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February 5, 2025 • 29 mins
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. Featuring journalist Jesse Serwer and Bass ...
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January 22, 2025 • 35 mins
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 Jeanna Isham of Dreamr Productions...
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December 4, 2024 • 44 mins
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.
If you know what this week's mystery sound is, tell us at mystery.20k.org.
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November 20, 2024 • 39 mins
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 learned language.
If you know wha...
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November 20, 2024 • 38 mins
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 speaking buttons.
If you know what this w...
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