C.K.: There is a lot of music composed by Astor Piazzolla for movies. Related to this there are differents periods. Until 1952 approximately, the music of movies were almost a laboratory where Piazzolla experimented all he learned while he was studying, with the excuse that a big orchestra was available for the recording of the sound track.
Finally, In the 60s, Piazzollas music for movies started to show his style, more tangustico. You can find a complete catalogue of this subject here. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.