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By Dallas Taylor
The stories behind the world's most recognizable and interesting sounds. Whether you're a professional audio engineer with decades of experience, a fourth grader who loves sound and music, or anyon
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41584,158 ratings
The podcast currently has 250 episodes available.
The most played episodes among Podcast App listeners.

Our 2026 Listener Story competition continues with five more incredible listener-made pieces. In this Silver collection, you’ll hear the surprising craft behind mechanical keyboards, the natural sounds hidden in Indian ragas, and how learning a new language can transform noise into belonging. Twenty Thousand Hertz is produced by Defacto Sound. Subscribe on YouTube to see our video series. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. 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. Listener Links: Hear Leonardo Barrios’ music under the name Bardø on Spotify. Learn about Ross Maddox’s work testing the hearing of babies at maddoxlab.org. Explore Nathaniel Harrison’s work with Shore 3 Studios. Hear Vicki Hansen’s music under the name Indiajiva on Youtube and Spotify. Try NetSuite Next for free at netsuite.ai/20k. Shopify: Own your customer relationships. Own your revenue. Start with a free trial at shopify.com/20k

Mixing music for Late Night television means working fast, putting artists at ease, and delivering polished mixes under immense pressure. In this episode, the Music Mixers of The Late Show with Stephen Colbert and The Tonight Show Starring Jimmy Fallon swap stories from decades behind the console. They reveal performances that went sideways, why backing tracks can actually make their jobs harder, and what it’s like mixing everyone from Cynthia Erivo to Paul McCartney. Featuring Harvey Goldberg and Lawrence Manchester. Twenty Thousand Hertz is produced by Defacto Sound. Watch Dallas' on-set videos with Harvey (The Late Show) and Lawrence (The Tonight Show). 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. Get three months of free payroll with Gusto at gusto.com/20k. Visit quo.com/20k for 20% of your first 6 months of business phone software.

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

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.” Learn about this year’s Listener Stories competition and submit your story at 20k.org/2026. See Dallas tour Joff's studio on Youtube. Twenty Thousand Hertz is produced by Defacto Sound. 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. 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.

The “I’m Lovin’ It” jingle is one of the most recognizable melodies on Earth. But the story behind it involves a global competition, thousands of mixes, a Trojan Horse pop song, and a surprising amount of celebrity beef. In this updated version of one of our favorite episodes, we trace how a five-note jingle became a worldwide phenomenon, and the controversy over who actually wrote it. Featuring Tom Batoy and Franco Tortora of Mona Davis Music. 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. Follow Dallas on Instagram, TikTok, Facebook, and LinkedIn. If you know what this week's mystery sound is, tell us at mystery.20k.org. Get three months of free payroll with Gusto at gusto.com/20k. Visit quo.com/20k for 20% of your first 6 months of business phone software.
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