Cruise Ship Plays the Loudest Seven Nation Army You've Ever Heard

The 964-foot-long MSC Magnifica isn't just a luxurious, $550 million cruise ship. It's the world's first 4,500 passenger musical instrument, and it rocked a slow, loooouuud rendition of The White Stripes' "Seven Nation Army" at this weekend's 825th Hamburg Port Anniversary in Germany. Talk about rocking the boat.