LOL. I had watched that but didn't take note of Sondheim back there. I'm not sure he was thinking, "Oh, God! Is she going to do it that way?" but perhaps he was. I suppose he might also be hating that ending, which I think was put in because there was no way those people were going to learn the counterpoint ending in the little rehearsal time they had. Oddly, on the second night, it was Montevecchi who had trouble staying in sync with the orchestra even though she had been a ballet dancer and you would think she therefore had a good sense of rhythm. Maybe she just had trouble hearing them.