First of all, in the begining of this Oscar obsession thing,i was asking to myself about “What exactly is the difference between sound editing and sound mixing categories?''  and i learned exacly this: “The sound editor is like the art director, and the sound mixer is like the cinematographer ; the art director comes up with everything that’s filmed, and the cinematographer decides how to photograph it,” And this explains everything. So the point of this category is every film in this category means art of sound.From these nominations, I was only watched 2 of them and i'm just throwing my head that The Martian will win on this category.