It’s usually the simplest ideas that create the biggest impact, as evidenced by this T-Mobile video. Now, the company plays on a similar concept with this clip of a flashmob in London’s Liverpool Street station.

One man starts the dance, before a multitude of people dressed as ordinary citizens join in one by one. As the crowd gets bigger, it becomes difficult to discern the real dancers from the bystanders--making things even more entertaining.

Watch the entire clip for a head-bopping, foot-tapping frenzy.

(Screencap courtesy of lifesforsharing on YouTube)

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