Buzz·Posted on Mar 20, 2014This Guy Covered Katy Perry's "Dark Horse" In 20 Different Styles And It's IncredibleFrom 'N Sync to Nirvana, he nails every single one. Every. Single. One.by Maycie TimponeBuzzFeed Video CuratorLinkFacebookPinterestTwitterMail View this video on YouTube youtube.com / Via reddit.com