If there is an underlying science to humanity's response to music, I sincerely hope it's never discovered. Seriously. I hope it never is.
There's enough systematic manipulation of humans by other humans going on already. Please don't give people additional sharp objects they can then go out and poke other people with. 
-40hz
+10
For anyone that has looked at documents that go over how to manipulate people... well... they're out there if you like a good horror documentary.
-Renegade
Heh I've written some of my own theories about music's effect on people, mostly to explore why I like or don't like certain songs. I am fairly "Mathematical" in my tastes. Construct a song with the correct ingredients such as powerhouse singer, good lyrics, and a few musical finesses. One of the reasons I tend not to like a lot of "Alternative" stuff is that the singer doesn't have enough power, and the lyrics are also often a bit bland. "So I was sitting on a park bench, eating an apple, thinking "baby, I wish I never yelled at you", but if I treat you right you'll be okay, won't you?"
The power singer can often cover for bad lyrics, and good lyrics can be sung slow (Pink Floyd), but if it's all scrambled, then it becomes blah.
Speaking of power singers, RIP Whitney.