Twenty Thousand Hertz

Twenty Thousand Hertz

Release Date

All Episodes

Harry 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 eigh ...  Show more

When 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 followe ...  Show more

The 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 backst ...  Show more

Doctor 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, a ...  Show more

Butterfly 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 “flu ...  Show more