Everyone knows the Anna Kendrick song "Cups" from the movie "Pitch Perfect", but you've never seen it performed like this.

Watch how this guy plays the song...using guns! He sings, he taps, he loads, he reloads and he occasionally shoots, but he does it all in perfect rhythm and harmony. It seems both reckless and cool at the same time. Although there's a couple of moments where it looks like the cameraman may be a little too close for comfort.

(Warning: Do not try this trick at home)