Whew! That was sooooooooooooo excruciating! The song will never replace my love for the instrumental version as heard in the film and on the soundtrack -- I remember seeing "Ryan's Daughter" the weekend the film opened, at a large reserved-seating theatre in Beverly Hills, and while it remains one of director David Lean's lesser achievements, the soundtrack has long been one of my favorites. I realize that you are specifically filming initial (cold) run-throughs, but I would sure like to hear this after a little rehearsal.
You made the point that Liza Minnelli recorded a song from this score, which I mentioned last week at another discussion here, making the point that, to my knowledge, Minnelli never acknowledged that the song came from Maurice Jarre's score for "Ryan's Daughter."
As you know, I've been following (and usually enjoying) several of your postings. May I offer a suggestion for another? Composer Georges Delerue is very popular on this site, and one of my favorite soundtracks by him is "Rich And Famous." Jane Olivor, in her "In Concert" album, sang "Daydreams," which I immediately recognized as the principal theme from "Rich And Famous." I think you should look into it.