Why do I have the feeling I have seen this movie before? "Adelina of Naples" https://en.wikipedia.org/wiki/Yesterday,_Today_and_Tomorrow https://en.wikipedia.

Why do I have the feeling I have seen this movie before? "Adelina of Naples" https://en.wikipedia.org/wiki/Yesterday,_Today_and_Tomorrow https://en.wikipedia.org/wiki/Yesterday,_Today_and_Tomorrow