So Forbidden Planet is the first major film to have an all-electronic score. It was made by Bebe and Louis Barron who were not referred to as musicians so as not to offend the musicians' union and instead their score was described as "Electronic Tonalities". The sounds were created via circuits made by Louis. This was before commercial synthesizers existed. Early electronic music was mostly made with things like scientific test equipment, tone generators, home made circuits, or manipulated tape. #Monsterdon

There's a short documentary on their work available on Youtube

Forbidden Pioneers: The Film Music of Bebe and Louis Barron

https://www.youtube.com/watch?v=eM2lijr3OTA

#Monsterdon

Forbidden Pioneers: The Film Music of Bebe and Louis Barron

YouTube

Legacy
In synthesizers, a "patch" is kind of like a recipe for a sound or set of sounds. Synthesist Todd Barton coined a synth patch that many modular synthesists make at least once, named after the Krell in the film Forbidden Planet and trying to achieve the same vibe as those "electronic tonalities" by Louis and Bebe. There are many versions of the Krell Patch around. The patch consists of sources of random voltage and feedback loops

Todd Barton - Krell Music - The Patch
https://vimeo.com/48382205

#Monsterdon

Krell Muzak the patch

This is merely a video of "the patch" so those of you interested can see the settings and blinking lights ;-) The audio on this video really sucks due…

Vimeo

@forestine

When I was studying electronic music in university we had a Buchla in the lab. It was amazing.

@RobotDiver cooooool

@forestine

An original too. It was so neat

@RobotDiver a lot of schools have forgotten amazing synths hanging around in closets