It's not exactly the same but in the early 1970s PDP-8 computers could play music by generating radio frequency interference in a manner that could be picked up

It's not exactly the same but in the early 1970s PDP-8 computers could play music by generating radio frequency interference in a manner that could be picked up by a nearby AM radio. The sound was not mechanically generated, but it had the same hacker spirit to it. https://www.youtube.com/watch?v=WMsyvBxEcSc https://www.youtube.com/watch?v=WMsyvBxEcSc