- 39 minutes 44 secondsThe Poop Song Conspiracy
One day, Ethan had an unfortunate bathroom incident. Then, he found an entire collection of songs online with his name in the title… and they all seemed to be about that embarrassing moment. That experience sent Ethan and his sister down a bizarre rabbit hole involving AI music, lots of poop jokes, and possibly the world’s most prolific songwriter. This story comes from the Hyperfixed podcast.
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11 May 2026, 10:00 am - 30 minutes 10 secondsThe Heartfelt Music of Bluey w/ Composer Joff Bush
What makes the music of Bluey feel so warm and alive? In this episode, Dallas travels to Brisbane, Australia to visit the studio of Bluey’s composer Joff Bush. There, Joff reveals the quirky instruments, musical easter eggs, and songwriting philosophy behind this beloved series. Along the way, he breaks down the music of two iconic Bluey episodes, “Sleepytime” and “The Sign.”
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4 May 2026, 10:00 am - 36 minutes 24 secondsThe Acoustic Worlds of Radiolab Creator Jad Abumrad
Before Radiolab became a cultural phenomenon, it was an experiment… one that Jad Abumrad built voice by voice, sound by sound. In this episode, Jad walks Dallas through his journey with the show, from its scrappy beginning in a New York basement, to leading a massive team, and ultimately stepping away. Along the way, he breaks down his signature sound design and storytelling techniques, and how he’s carried those into newer projects like Dolly Parton’s America and Fela Kuti: Fear No Man.
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20 April 2026, 10:00 am - 29 minutes 44 secondsHe was deaf for 35 years + Listener Stories kickoff
Last year, we ran three full episodes of listener-produced stories. But one beautiful story was just a little too long for the final cut… and we couldn’t leave it behind. In this episode, sound designer Jesse Herrera tells the story of his grandfather, who lived in silence for 35 years before receiving a cochlear implant, and the overwhelming, joyful process of learning to hear again. Afterwards, Dallas and Casey reflect on last year’s Listener Stories and kick off this year’s competition.
Learn about this year’s Listener Stories competition and submit your story at 20k.org/2026.
To make a donation to the Harry Hakeem Scholarship Fund supporting the education of children with hearing loss, visit peiabq.org/giving.
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23 March 2026, 10:00 am - 32 minutes 6 secondsHarry Potter and the Sound Designer’s Stone
Harry Potter has been brought to life on page and screen. But what would it take to make the wizarding world come alive using sound alone? In this episode, we go behind the scenes of the new full-cast editions of the Harry Potter series, where a team of sound designers spent eighteen months crafting 130 hours of immersive audio. From the whistle of the Hogwarts Express to the rasp of the Dementors, every spell, creature, and location had to sound tangible and emotionally distinct. Featuring Will Cohen and Lawrence Kendrick of String and Tins.
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9 March 2026, 10:00 am - 27 minutes 44 secondsWhen Everything Stopped, He Started Listening
David Jeffers has always understood the world through sound. As a kid, he bounced beats between tape decks and built speaker boxes from spare parts. After college, he founded an underground hip hop label. Then came the day that split his life in two. And in the quiet that followed, David started listening more deeply… and piece by piece, he built a new life, guided not by what he lost, but what he could create.
For news about Quad Life, the upcoming documentary about David, follow Quad_Life_Doc on Instagram.
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Twenty Thousand Hertz is produced by Defacto Sound.
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23 February 2026, 11:00 am - 37 minutes 4 secondsThe State of the 20K Multiverse™
What happens when a podcast about sound gets into video? In this special behind-the-scenes episode, producer Grace East flips the script and interviews Dallas about his leap into visual storytelling, and how the different pieces of the 20K Multiverse all fit together. From backstage at SNL, to Disney Imagineering’s archives, to real-life Bluey locations, Dallas reveals the anxieties, lucky breaks, and human connections behind our new video series.
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9 February 2026, 11:00 am - 38 minutes 15 secondsDoctor Who & The BBC Radiophonic Workshop
What does a time machine sound like? Or a magic carpet? For the BBC Radiophonic Workshop, that was just another day at the office. For 40 years, this oddball collective of engineers and composers pushed the boundaries of sound design, crafting eerie atmospheres, quirky jingles, and the iconic audio of Doctor Who. In this episode, we explore the rise and fall of this pioneering studio with composer and archivist Mark Ayres, and uncover how these sonic wizards shaped the future of sound.
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26 January 2026, 11:00 am - 27 minutes 20 secondsButterfly in the Synth: Reading Rainbow’s Magical Theme Song
The theme song to Reading Rainbow has been delighting kids (and nostalgic grown-ups) for over 40 years. But how did this instantly iconic track come to be? In this episode, composer Steve Horelick reveals the unlikely story of its creation, from its empowering lyrics, to its “fluttering butterfly” synth sound, to how Chaka Khan and a mystery drummer helped shape one of its later versions.
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12 January 2026, 11:00 am - 22 minutes 33 secondsAuld Lang What? The surprising origins of the New Year’s song
Every New Year’s at midnight, we raise our voices to sing a song that few of us understand: “Auld Lang Syne.” So when and why did this become the anthem of the holiday? In this episode, our friends at the Smithsonian’s Sidedoor podcast trace the mysterious rise of “Auld Lang Syne” from rural Scotland, to a New York jazz club, to a classic film and an iconic actor. Featuring folklorist Jim Deutsch.
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31 December 2025, 11:00 am - 46 minutes 45 secondsGuess That Sound 2025: Youtube Channel Champs
For our sixth annual Mystery Sound game show, we’ve invited three guests from our video series to test their sonic knowledge on 18 sounds, including production logos, video game FX, bird calls, strange instruments, and more. So put on your listening cap and get ready to guess along in this surprising and hilarious competition. Featuring Jake Hartsfield, Carlos Torres, and John Michael Hinton.
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