I don't recall reading anything about that, but it really makes perfect sense, especially now with hindsight. Speaking for myself, I was overjoyed at the time to have LuPone reunite with ALW to belt the hell out of one of his scores. But it's clear now that many of the great candidates for this role would have required a less demanding vocal part. And it was certainly disappointing to me (and some, though clearly not others) to hear even a decent singer like Close approach the score after hearing LuPone do it. I still laugh (tinged with sadness) when I hear the key change DOWN at the end of With One Look so the song can conclude on what I assume was a more manageable note for Close to belt out powerfully. I assume, from recordings though I didn't see them live, that Buckley and Paige delivered the score. But they aren't big box office and certainly don't have any ties to Hollywood like a Close, Shepard, Dunaway, Carroll, MacLaine did, which adds an extra layer to the proceedings.