I was lucky to see her live in Barcelona some years ago in a Andrew Lloyd Webber concert alongside Geronimo Rauch, Joanna Ampil and John Owen Jones. She performed this song, I guess for the first time ever, backed up with a symphonic orchestra, and was phenomenal. Also, her rendition of whishing in that very concert was the strongest, most thrilling one I have ever heard. Thanks so much for sharing this and happy christmas!
My theory may not be connected to this but maybe Andrew asked the AUS Director to make it more operatic, cause he's obsessed with his former wife. Aligned with Brightman's life in 1997. I felt that Anna emulates Sarah a bit in the Australian production.