Synthesizers are revolutionary instruments. These electronic devices use knobs, buttons and sliders to make different sounds — and you can hear them in all sorts of music, from pop to hip-hop. But that wasn’t always the case. Join Joy and co-host Lilike as they explore the history of the synthesizer and learn one album transformed it from an experimental instrument to an essential hitmaker. We’ll also hear from Switched On Pop producer Reanna Cruz about the legacy of these groovy instruments. All that, plus a new game of First Things First!  This episode was sponsored by: Disney+ (<a href="http://ondisneyplus.disney.com/movie/diary-of-a-wimpy-kid-christmas-cabin-fever" class="in-cell-link">ondisneyplus.disney.com/movie/diary-of-a-wimpy-kid-christmas-cabin-fever</a>) Diary of Wimply Kid Christmas: Cabin Fever, streaming only on Disney+ December 8th. Rated PG, parental guidance suggested.

Chew on this! The surprising history of gum

Brains On presents Forever Ago®, a history show for the whole family! Every episode looks into the surprising and fascinating history of things we think are ordinary, but they’re not -- like ice cream flavors, video games, baths and more. We make learning about the past fun while teaching listeners to think critically about history.