Whether you are a White Stripes fan or not, you have more than likely heard the hit song, Seven Nation Army. Therefore, the opening notes of this popular song will stand out in the corners of your mind — being recalled almost instantly. Well, during Hamburg’s Harbour-Birthday celebration, as you can see in this viral video, the MSC Magnifica cruise ship decided to bring the house down by using their newly installed horn system to play the opening notes from Seven Nation Army. As soon as it started, the crowd started to go wild and this video went viral shortly thereafter. The next time you book a reservation on a cruise ship, especially a cruise ship like the MSC Magnifica, you might be able to submit your requests for the song that they play — or you might just want to keep hearing Seven Nation Army.