I don't know what this is 'officially' but I just listened to https://www.youtube.com/watch?v=F3n9bLnEcQA and found it was actually pretty cool so am kinda checking out others.

Wanted to ask... Anybody else seen stuff like this done before?

a couple times before, one in the old black ops. cant remember the song they used. how the hell did you find this, anyway?

Leroy Anderson's "The Typewriter" syncs a typewriter to a symphony orchestra: https://www.youtube.com/watch?v=q_q5iuaBvOk