From traffic cops in reflective vests to the full ensemble decked out in their snazzy dress greens, the renowned Russian choir puts its own unique spin on the Curtis Mayfield-inspired jam to bring a bit of New Year’s cheer to Russia and beyond.

Ironically, amateur footage of the traffic cop busting a move on the streets of Moscow while filming their Happy rendition caused a stir of its own on social media. Following the online clamor, Russia’s Ministry of the Interior (MVD) later said it was investigating the footloose cop to see if he had broken any laws by getting down while on duty.

Right up until the Happy rendition was released on December 29, the court of public opinion was still in full swing, with many praising the footloose cop, saying he should be awarded for his civic flair, not punished. But while his supporters were unaware that it was all part of a planned performance, it’s unlikely the investigators had much to look into at all, seeing that the Red Army Choir is also a part of the MVD.

First formed in 1939 during the “Great Patriotic War” to boost the morale of Soviet troops battling off the Nazi invasion, the choir has in modern times become famous for belting out lighter songs for far easier times.

Several unique renditions of Western chart toppers, including Adele’s “Skyfall” and a show-stealing cover of Daft Punk’s “Get Lucky” during the Sochi 2014 Opening Ceremony have more recently propelled the choir into the international spotlight.

“Get Lucky”, incidentally, was also blessed with a touch of Williams smooth vocals and trademark falsetto.

After being released in January of last year, “Happy” has sold over 12 million copies worldwide, making it one of the most popular singles ever. It has since inspired roughly 1,950 fan tribute videos from 152 countries due to its simple yet magnetic formula; show happy people singing the song out in public. But while many opted to merely lip-sync the tune, the Red Army Choir wasn’t content with anything less than putting their own vocal stamp on the hit!