There's something just incredibly awesome when musicians normally known for soft/mellow music suddenly shift gears and do music totally uncharacteristic and HEAVY.
And if it's some quasi-folkie (attractive) soft-spoken chick with a guitar, it takes it over the limit. Here's Annie Clark (aka St. Vincent, known for 2009's awesome Actor) doing a cover of Big Black's "Kerosene" last Sunday (May 22) at the Bowery Ballroom here in NYC. This was the show to celebrate the 10th anniversary of Michael Azerrad's classic book Our Band Could Be Your Life: Scenes from the American Indie Underground, 1981-1991. Several contemporary bands took turns covering the bands covered in the book.
Here, Annie Clark fucking rips a hole in the ozone layer with this. It's worth watching all 7 minutes of this. You will be pounded into submission. Steve Albini, eat your heart out.