21st century PYSOPS, with a few shades of 'Oddball'

"Taliban hate [this] music," said a US special forces sergeant. "Some locals complain but it's a way to push them to choose [sides]. It's motivating marines as well." Apparently, when rebel forces start firing on American soldiers in Marjah, an armoured vehicle with "powerful speakers" fires up the tunes, blaring rock and heavy metal so loudly that it can be heard two kilometres away. The tactical playlist continues for several hours.
http://www.guardian.co.uk/music/2010...-taliban-metal