re: Zone of interest is great

Well, at the risk of revealing something I shouldn't: it's a very powerful movie on a subtle level. There's very little soundtrack and when sound comes, it's perfectly integrated into the film. So I imagine the lady was already emotional, and when the girl started playing the piano, it took her over the top. Add to this the fact that they are German (which adds a whole 'nother dimension)... Every German here I've spoken with that saw the film was deeply moved. Not many stayed through the end credits though, which, in my opinion - and my German wife agreed - was an important part of the film.