Not an answer to your question, but if the instruments are USB (I assume they are), you could also checkout Clone Hero. It’s a free PC version of Rock Bank/Guitar Hero, people will make custom songs for it as well, I’m sure some have drum tracks too.

Yes, it seems like a really recent term to me. I first heard it when the writers strike began and never before that.

When I think streamer I think of people on Twitch or YouTube who stream themselves. No idea where calling streaming services/sites “streamers” came from but it always confuses me.