Insights from recent episode analysis
Audience Interest
Podcast Focus
Publishing Consistency
Platform Reach
Insights are generated by CastFox AI using publicly available data, episode content, and proprietary models.
Most discussed topics
Brands & references
Total monthly reach
Estimated from 47 chart positions in 47 markets.
By chart position
- 🇨🇦CA · Design#21M to 3M
- 🇺🇸US · Design#31M to 3M
- 🇬🇧GB · Design#41M to 3M
- 🇦🇺AU · Design#11300K to 1M
- 🇩🇪DE · Design#34100K to 300K
- Per-Episode Audience
Est. listeners per new episode within ~30 days
2.8M to 8.5M🎙 ~2x weekly·236 episodes·Last published today - Monthly Reach
Unique listeners across all episodes (30 days)
5.6M to 17M🇨🇦18%🇺🇸18%🇬🇧18%+44 more - Active Followers
Loyal subscribers who consistently listen
2.2M to 6.8M
Market Insights
Platform Distribution
Reach across major podcast platforms, updated hourly
Total Followers
—
Total Plays
—
Total Reviews
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* Data sourced directly from platform APIs and aggregated hourly across all major podcast directories.
On the show
From 11 epsHost
Recent guests
Recent episodes
John Williams: A Composer’s Legacy
Jun 15, 2026
38m 51s
John Williams: A Composer’s Life
Jun 1, 2026
35m 37s
Age of Audio: The Future of Podcasting (and 20k)
May 25, 2026
31m 10s
Age of Audio: The Inside Story of Podcasting
May 18, 2026
42m 18s
The Poop Song Conspiracy
May 11, 2026
39m 44s
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| Date | Episode | Topics | Guests | Brands | Places | Keywords | Sponsor | Length | |
|---|---|---|---|---|---|---|---|---|---|
| 6/15/26 |  John Williams: A Composer’s Legacy | In our last episode, we followed composer John Williams from his childhood to his 1970s run with Steven Spielberg and George Lucas. Now, we pick up the story as John enters an era of seemingly impossible success… from Raiders of the Lost Ark to Home Alone, Jurassic Park, Schindler’s List, and beyond. In this episode, we explore how John revived the grand orchestral score, conquered the classical music world, and crafted melodies that millions of people can instantly recognize. Along the way, journalist Tim Greiving reveals the habits, quirks, and creative brilliance of this living legend. Twenty Thousand Hertz is produced by Defacto Sound. Support the show and get ad-free episodes at 20k.org/plus. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Find out how you can get the iPhone 17 Pro at no cost with an eligible trade in at att.com/iphone, or by visiting an AT&T store. Visit quo.com/20k for 20% of your first 6 months of business phone software. Sign up for a one-dollar-per-month Shopify trial at shopify.com/20k. Learn more about your ad choices. Visit megaphone.fm/adchoices | 38m 51s | ||||||
| 6/1/26 |  John Williams: A Composer’s Life | John Williams has written some of the most famous film scores ever, from Star Wars to Indiana Jones to Jurassic Park. But before the blockbuster success, there was a kid growing up around jazz musicians in New York, and a young composer trying to find his voice. In this episode, journalist Tim Greiving takes us through John’s early life and career, from his years as a session player to the meeting with Steven Spielberg that changed everything. Along the way, we unpack the stories behind John’s early iconic scores, including the two-note terror of Jaws, the symphonic world of Star Wars, and the mysteries of Close Encounters of the Third Kind. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on YouTube to see our video series. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Support the show and get ad-free episodes at 20k.org/plus. If you know what this week's mystery sound is, tell us at mystery.20k.org. Buy the biography John Williams: A Composer’s Life wherever you get your books. Subscribe to Tim’s Substack Behind the Moon, an exclusive dive behind the scenes of the book. Find out how you can get the iPhone 17 Pro at no cost with an eligible trade in at att.com/iphone, or by visiting an AT&T store. Learn more about your ad choices. Visit megaphone.fm/adchoices | 35m 37s | ||||||
| 5/25/26 |  Age of Audio: The Future of Podcasting (and 20k) | After making Age of Audio, a feature documentary about the history of podcasting, filmmaker Shaun Michael Colón sat down with Dallas for a revealing conversation about the state and future of this industry. Together, Dallas & Shaun unpack the shift toward celebrity chit chat shows, what gets lost in video, the real economics of making Twenty Thousand Hertz, and why highly crafted audio storytelling still matters. Learn about this year’s Listener Stories competition and submit your story at 20k.org/2026. For updates on Age of Audio, visit the official website, or follow the film on Instagram and Tiktok. Twenty Thousand Hertz is produced by Defacto Sound. Support the show and get ad-free episodes at 20k.org/plus. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Find out how you can get the iPhone 17 Pro at no cost with an eligible iPhone trade in at att.com/iphone, or by visiting an AT&T store. Learn more about your ad choices. Visit megaphone.fm/adchoices | 31m 10s | ||||||
| 5/18/26 |  Age of Audio: The Inside Story of Podcasting | The history of podcasting has rarely been told. But in this episode, the brightest minds in podcasting reveal the inside story of this medium: from the invention of RSS feeds, through the Gold Rush era of corporate investments, to the bubble bursting, and the rise of celebrity podcasts. Along the way, Ira Glass explains the origins of This American Life and Serial, Marc Maron recounts Obama visiting his garage, Roman Mars lays out his vision for indie podcasts, and so much more. This story was adapted from the feature documentary Age of Audio. Learn about this year’s Listener Stories competition and submit your story at 20k.org/2026. For updates on Age of Audio, visit the official website, or follow the film on Instagram and Tiktok. Twenty Thousand Hertz is produced by Defacto Sound. Support the show and get ad-free episodes at 20k.org/plus. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Find out how you can get the iPhone 17 Pro at no cost with an eligible iPhone trade in at att.com/iphone, or by visiting an AT&T store. Sign up for a one-dollar-per-month Shopify trial at shopify.com/20k. Visit quo.com/20k for 20% of your first 6 months of business phone software. Learn more about your ad choices. Visit megaphone.fm/adchoices | 42m 18s | ||||||
| 5/11/26 |  The 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. Learn about this year’s Listener Stories competition and submit your story at 20k.org/2026. Twenty Thousand Hertz is produced by Defacto Sound. Support the show and get ad-free episodes at 20k.org/plus. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Follow Hyperfixed wherever you get your podcasts. Hear A Song About Ethan by Matt Farley, or request a custom song by him. Find out how you can get the iPhone 17 Pro at no cost with an eligible iPhone trade in at att.com/iphone, or by visiting an AT&T store. Learn more about your ad choices. Visit megaphone.fm/adchoices | 39m 44s | ||||||
| 5/4/26 |  The Heartfelt Music of Bluey w/ Composer Joff Bush✨ | music compositionBluey+3 | Joff Bush | Defacto SoundAT&T+3 | Brisbane, Australia | BlueyJoff Bush+5 | — | 30m 10s | |
| 4/20/26 |  The Acoustic Worlds of Radiolab Creator Jad Abumrad✨ | sound designstorytelling techniques+3 | Jad Abumrad | RadiolabDolly Parton’s America+2 | — | RadiolabJad Abumrad+3 | Shopify20k | 36m 24s | |
| 3/23/26 |  He was deaf for 35 years + Listener Stories kickoff✨ | hearing losscochlear implant+3 | Jesse Herrera | Defacto SoundHarry Hakeem Scholarship Fund+6 | — | cochlear implanthearing+3 | Sonos | 29m 44s | |
| 3/9/26 |  Harry Potter and the Sound Designer’s Stone✨ | sound designHarry Potter+3 | Will CohenLawrence Kendrick | String and TinsDefacto Sound+1 | — | sound designHarry Potter+3 | Gusto20k | 32m 06s | |
| 2/23/26 |  When Everything Stopped, He Started Listening✨ | sound designpersonal transformation+3 | David Jeffers | Quad LifeDefacto Sound+3 | — | soundmusic+5 | Gusto20k | 27m 44s | |
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| 2/9/26 |  The State of the 20K Multiverse™✨ | soundvideo storytelling+4 | Grace East | Defacto SoundSNL+8 | Bluey locations | soundvideo+7 | gusto20k | 37m 04s | |
| 1/26/26 |  Doctor Who & The BBC Radiophonic Workshop✨ | sound designDoctor Who+3 | Mark Ayres | BBC Radiophonic Workshopmegaphone.fm | — | sound designDoctor Who+5 | LALAL.AI20K | 38m 15s | |
| 1/12/26 |  Butterfly in the Synth: Reading Rainbow’s Magical Theme Song✨ | theme songmusic composition+4 | Steve Horelick | Defacto SoundReading Rainbow | — | Reading Rainbowtheme song+5 | ExpressVPN20k | 27m 20s | |
| 12/31/25 |  Auld Lang What? The surprising origins of the New Year’s song✨ | New Year's traditionsAuld Lang Syne+3 | Jim Deutsch | SmithsonianSidedoor+2 | — | Auld Lang SyneNew Year's+5 | Gusto20k | 22m 33s | |
| 12/17/25 |  Guess That Sound 2025: Youtube Channel Champs✨ | sound guessing gamecompetition+4 | Jake HartsfieldCarlos Torres+1 | Defacto SoundYouTube | — | mystery soundgame show+4 | Curiosity Stream20k | 46m 45s | |
| 12/3/25 |  The Sound of Fallout: From Iconic Games to Prestige TV✨ | sound designvideo games+4 | Mark LampertSue Cahill+3 | Defacto SoundYouTube+4 | — | Falloutsound design+5 | Shopify20k | 41m 52s | |
| 11/19/25 |  Defying Gravity: The Audio Wizardry of Wicked's Live Vocals | 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, to “silent wind” machines, to a jaw-dropping live performance of “Defying Gravity,” this is the story behind a truly magical production. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Support the show and get ad-free episodes at 20k.org/plus. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Join our community on Reddit. Explore incredible speakers, soundbars and more at sonos.com. Get 50% off your first box of Factor Meals, plus free breakfast for a year at factormeals.com/tth50off. Subscribe to Working Smarter wherever you get your podcasts. Sign up for a one-dollar-per-month trial at shopify.com/20k. Learn more about your ad choices. Visit megaphone.fm/adchoices | 32m 21s | ||||||
| 11/5/25 |  The Secret Soundtracks of Movies & TV | 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 into sports broadcasts, hip hop singles, and modern sitcoms, and reveal the vintage library track that Quentin Tarantino brought back into style. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Support the show and get ad-free episodes at 20k.org/plus. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Join our community on Reddit. Explore incredible speakers, soundbars and more at sonos.com. Sign up for a one-dollar-per-month trial at shopify.com/20k. Visit quo.com/20k for 20% of your first 6 months of business phone software. Claim your $75 sponsored job credit at indeed.com/hertz. Learn more about your ad choices. Visit megaphone.fm/adchoices | 45m 01s | ||||||
| 10/22/25 |  Inside Imagineering: How Sound Powers Disney Magic | 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 of how one of Disney’s most iconic songs got a brand new verse, more than half a century after its debut. Watch Dallas' trip to Walt Disney Imagineering on Youtube. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Support the show and get ad-free episodes at 20k.org/plus. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Join our community on Reddit. Explore incredible speakers, soundbars and more at sonos.com. Visit quince.com/20k for free shipping on your order & 365 day returns. Find a therapist who takes your insurance at growtherapy.com/20k. Sign up for a one-dollar-per-month trial at shopify.com/20k. Learn more about your ad choices. Visit megaphone.fm/adchoices | 25m 41s | ||||||
| 10/8/25 |  Live from New York, I’m Retired! SNL’s Sound Legend Signs Off | 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 about stepping into Bobby’s shoes. Watch Dallas' trip to SNL on Youtube. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Support the show and get ad-free episodes at 20k.org/plus. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Join our community on Reddit. Learn more about Fred Hedemark’s work at audiofred.com. Find a therapist who takes your insurance at growtherapy.com/20k. Get 3 months of free payroll at gusto.com/20k. Visit quo.com/20k for 20% of your first 6 months of buisiness phone software. Claim your $75 sponsored job credit at indeed.com/hertz. Learn more about your ad choices. Visit megaphone.fm/adchoices | 35m 39s | ||||||
| 9/24/25 |  The Nursery Rhyme That Ruined a Rock Band | 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 collateral damage of copyright. Follow Cautionary Tales wherever you get your podcasts. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Support the show and get ad-free episodes at 20k.org/plus. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Join our community on Reddit. Find a therapist who takes your insurance at growtherapy.com/20k. Get 3 months of free payroll at gusto.com/20k. Sign up for a one-dollar-per-month trial at shopify.com/20k. Cut your current cloud bill in half with OCI at oracle.com/20k. Learn more about your ad choices. Visit megaphone.fm/adchoices | 32m 47s | ||||||
| 9/10/25 |  Listener Stories 2025 (Gold): Transit Tunes & Childhood Chimes | 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 YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Support the show and get ad-free episodes at 20k.org/plus. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Join our community on Reddit. Visit quince.com/20k for free shipping on your order & 365 day returns. Sign up for a one-dollar-per-month trial at shopify.com/20k. Claim your $75 sponsored job credit at indeed.com/hertz. Visit openphone.com/20k for 20% of your first 6 months. Learn more about your ad choices. Visit megaphone.fm/adchoices | 28m 11s | ||||||
| 8/27/25 |  Yahoo! The Yodel Heard Around the World | 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 Gustafson. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Support the show and get ad-free episodes at 20k.org/plus. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Join our community on Reddit. Stream Wylie & The Wild West on Spotify, Apple Music, Youtube Music, or wherever you get your music. Order Wylie’s book, How to Yodel: Lessons to Tickle Your Tonsils and Funnybone. Sign up for Riverside for free at creators.riverside.com/20K, and get 20% off a Riverside Pro subscription using promo code 20k. Cut your current cloud bill in half with OCI at oracle.com/20k. Sign up for a one-dollar-per-month trial at shopify.com/20k. Learn more about your ad choices. Visit megaphone.fm/adchoices | 25m 39s | ||||||
| 8/13/25 |  Super Mario Bros: Koji Kondo’s 8-Bit Masterpiece | 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 of Thomas Game Docs. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Support the show and get ad-free episodes at 20k.org/plus. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Join our community on Reddit. Follow Kirk Hamilton’s podcasts Strong Songs and Triple Click. Subscribe to Thomas’ Youtube channel, Thomas Game Docs. Sign up for Riverside for free at creators.riverside.com/20K, and get 20% off a Riverside Pro subscription using promo code 20k. Visit openphone.com/20k for 20% of your first 6 months. Claim your $75 sponsored job credit at indeed.com/hertz. Learn more about your ad choices. Visit megaphone.fm/adchoices | 33m 14s | ||||||
| 7/30/25 |  Listener Stories 2025 (Silver): Pinball Pings & Airport Acoustics | 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 YouTube to see our video series. If you know what this week's mystery sound is, tell us at mystery.20k.org. Support the show and get ad-free episodes at 20k.org/plus. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. Join our community on Reddit. Sign up for Riverside for free at creators.riverside.com/20K, and get 20% off a Riverside Pro subscription using promo code 20k. Cut your current cloud bill in half with OCI at oracle.com/20k. Sign up for a one-dollar-per-month trial at shopify.com/20k. Learn more about your ad choices. Visit megaphone.fm/adchoices | 30m 20s | ||||||
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Chart Positions
50 placements across 47 markets.
Chart Positions
50 placements across 47 markets.