More toward the notes in the video themselves (I'm more in media studies and far less conversant in theater studies): from my own zettelkasten on the live nature/immediacy of performance subject, I've seen how some older cultures (ancient Greeks and all sorts of Indigenous peoples, including modern Australian indigenous) use(d) their associative memories in ways we don't generally today, and as such would have been able to "re-live" performances which have occurred in the past without modern recording tools. Perhaps it's been explored previously, but if it's of interest to you and your current work or perhaps post-Ph.D., Lynne Kelly's Knowledge & Power in Prehistoric Societies: Orality, Memory and the Transmission of Culture (Cambridge, 2015) may be helpful along with the supporting works of Milman Parry, Albert Lord, and Walter J. Ong (esp. Orality and Literacy; Methuen, 1982). If you really want to spelunk this area, there are some additional explorations of these in the overlap of Frances Yates' (1966) discussion of memory theaters in Western culture.

Robert Kanigel's "Hearing Homer's Song: The Brief Life and Big Idea of Milman Parry (Knopf, 2021), may provide a quick/fun (audiobook available) non-technical introduction into Milman's work on Homer for those who haven't come across it before and are interested in early performance techniques. It provides an intriguing and entertaining detective story on multiple fronts.

As ever, thanks for sharing your notes and the fascinating references within them... 🗃❤