[treve]

I wrote a bit about this a few years ago in case people want to know more about this: https://evertpot.com/ecmascript-4-the-missing-version/

Language aside. Flash offered so much. I wonder if we're mostly caught up now, but it's taken years!

[PaulDavisThe1st]

Specifically in connection with synthesis, consider reading up on the history of the Music N language family.

https://en.wikipedia.org/wiki/MUSIC-N

This goes back to 1957, and as the article notes, is the parent of many of the most used synthesis languages right down to the present day (which is both good and bad).