quoted 1 line I know Sandra sung on Hubert Kah's "It's Me, Cathy," but is she Hubert> I know Sandra sung on Hubert Kah's "It's Me, Cathy," but is she Hubert's wife?
Yes, Michael Cretu (Hubert Kah) is married to Sandra.
quoted 1 line This isn't referring to _THE_ Sandra ???> This isn't referring to _THE_ Sandra ???
Yup, _THE_ Sandra.