All the talk about how heavy metal music (or similar types like grunge, etc) supposedly makes people depressed and angry can finally end. Those of us who listen to it already knew this
http://www.abc.net.au/news/2015-06-25/study-finds-heavy-metal-reduces-anger-depression/6571820
http://www.abc.net.au/news/2015-06-25/study-finds-heavy-metal-reduces-anger-depression/6571820