Here is an article about aggression as it relates to music.
http://www.apa.org/journals/releases/psp845960.pdf
They bitch about heavy metal lyrics being incomprehensible, though men could interpret them and hear the words clearer than women. Listen don't hear! Also, after listening to violent music people scored significantly higher on verbal tests related to "violent words".
The paper made some good points but I think the whole methodology is pretty flawed.
I don't like how for the non-violent stuff they used two Beastie Boys songs to offset the harder rap(Cypress Hill and Run DMC) in the second test. They also stuck with the song Jerk Off again for the second test even though it wasn't contrasted with another Tool song like the first test was. A mellower Suicidal Tendencies song was chosen to offset I Wouldn't Mind in the second test though. Sloppy sloppy.
The Night Santa went Crazy, even while being a humorous song had the same relative effects as the serious(their words) violent music did. Weird. Why the hell did they use Violent Femmes in the second part? Also, way to say that people who like "violent" music will be sucked into a spiral of "antisocial behavior", APA. Way to just pull that right out of your ass, Anderson and Carnegy. How do they explain the metal and hard rap communities if this music causes "relationships to deteriorate" and creates a "hostile work environment" that effects "personality". What are we supposed to listen to, you big whiny douches? In short, I knew the whole study would be bullshit when they referenced the PMRC in the first paragraph of the paper. And where was the country music!?!?!