An elderly relative's debility inhibits reading music analysis only in writing: so it is off-topic.
I mean 'audiovisual analysis' as analysis of pieces with music history and theory in video with audio, like Japanese pianist Kotaro Fukuma's helpful videos on Bartok's Piano Concerto no. 2 and Ligeti's only Piano Concerto. Particularly helpful are his on-screen:
transcriptions of important music theory terms.
reproductions of parts of scores that he explains or samples by playing on the piano.
How can such analysis be found efficiently, without Googling each piece?