If you\u2019ve been listening to LeVar's new podcast Sound Detectives, you know there's something irresistible about a missing sound. That\u2019s why we teamed up with our friends at 99% Invisible to tell the story of the first music streaming service, a 200-ton instrument called the Telharmonium whose sound has been lost to history.\n\n99% Invisible is a podcast about the unnoticed design that shapes the world we live in. This is their latest episode, a collection of mini-stories that weren\u2019t quite big enough for a whole episode. You\u2019ll hear about time measured in decimals, a rogue unlicensed Italian architect, and the ghost kitchens that power food delivery apps. And then yours truly, telling the story of the Telharmonium.\n\nListen to 99% Invisible wherever you get your podcasts and visit 99pi.org for more.