I’m not sure if this counts as a traditional flash mob, but it is still one of the coolest things that we’ve ever seen at a wedding. This video is actually a few months old, but it is starting to trend again because of the upcoming Les Miserables film release. It actually occurred at the wedding reception for Susanne and Sune Vibæk Svanekier in May at the Workers’ Museum in Copenhagen.

In the video, the couple is celebrating their wedding with friends and family when someone breaks into a rendition of the song “One Day More.” Pretty soon another person and then another person join in with their own parts of the song until the gathering has turned into a full blown cast performance of the song.

My only question is where did they get so many friends who can sing?