music and emotion

It appears yet again, scientists have gone on an endeavor to find out exactly why thing are the way they are. Instead of you know, curing diseases, the science fokes of the world have decided it would be more been beneficial to research "why exactly we get cold in winter". I'm being sarcastic but you get my point, there are a lot of thing out there being reached that are just plain pointless. I'm not saying researching how sound effects the brain is pointless but come on there's gotta be a growing list of diseases that are just waiting for a cure.
Never the less I did find the article mildly informative and stocked with tons of useless information I have now memorized to make all the kids I sit with at lunch feel inferior.(knowing them they'll just one-up me with a funny cat video then make me feel inferior at poker.)For instance the human reaction to sound is subconscious and was put there to help us back in the prehistoric days, to identify animals in distress(screaming) witch usually meant something bad was near by (but when is a blood curdling scream a good thing). The instinct was carried over and now we start we start to get nervous when we here high pitched noises. Something I found funny was Bette Davis  actually felt threatened by music overshadowing her performance, I mean come on its not like music can sprout legs and backflip(although I dare it to do so) and she had already one 2 awards for her acting at this point she's just being greedy. Lastly the article menschen Paranormal Activity's usage of "low frequency" sounds to instill a sense of fear.(because nothing screams "fear" like that annoying low pitched bussing sound at the back of you head... I don't know I didn't see the movie)Credit is still due to them simply because they where able to use music in a move that had no music(because that makes perfect sense).
My only question would be what other movies did Davis win her awards in and for what role? (I know it's a dump question but I had to ask it)