And for what it's worth, look at this:
https://www.youtube.com/watch?v=eJsmn9-GSOU

And this: (Saint) Thaïs of Alexandria

Also https://en.wikipedia.org/wiki/Tha%C3%AFs.
The earliest Thaïs may have been a lover of Alexander the Great.

But which Thaïs were Newman Levy and Jules Massenet referring to? The Saint? I think so.