One of the most effective ways to spread holiday cheers to people is a surprise flash mob. This was actually true when the United States Air Force Band decided to surprise visitors by doing a flash mob at the Smithsonian's National Air and Space Museum.

At first, there was only a single cellist at the middle of the museum. As he plays on, more and more U.S. Air Force men emerged to join the cellist on the floor. In total, 120 musicians performed an original arrangement of "Jesu, Joy of Man's Desiring/Joy to the World."

Visitors were shocked and surprised to see this talented musicians perform. They also proceeded on taking pictures and videos of the performance with their respective cameras and smartphones.

This was truly an amazing performance by the U.S. Air Force Band and they also did a good job on giving happiness to the guests.

Watch their amazing performance below.

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Christmas, Christmas music, Viral Videos