That's what actors + pre-recordings are for (we could try using AI to generate the music live but that would make the actors' work more complicated and add more

That's what actors + pre-recordings are for (we could try using AI to generate the music live but that would make the actors' work more complicated and add more fail modes, why bother?). Note that using recordings already happened in the pre-AI era: https://blabbermouth.net/news/anvils-lips-on-bands-using-backing-tracks-during-live-shows-i-completely-disagree-with-that-concept https://blabbermouth.net/news/anvils-lips-on-bands-using-bac...