Have you ever doubted the impact of the song "Let It Go" from the hit Disney movie "Frozen"? This video of a group of US Marines singing the mega-popular song will make you a believer.

In the video, which was uploaded to Facebook and quickly went viral, a group of Marines are gathered in a room watching "Frozen" on a big screen TV.

They all belt out the lyrics from the song. It's a humorous moment that highlights the Marines' camaraderie and is sure to make anyone smile.

Watch the Marines sing "Let It Go' below.