Did Pharrell Williams borrow the idea for "Happy" from C2C?

Music Television presents music video from C2C

There is a question that has been burning in my mind ever since I became aware of a team of four DJ's/Beatmaster/Performance Artists known as C2C out of France. C2C came up with their own original song titled "Happy", as original as DJ's can be of course, as they sample other peoples songs into their own. Their music video for the song features some amazing dancing, and similarly to Pharrel's release, there was even a contest to involve fans from around the world. This immediately got me wondering after I heard it and saw the video below... Did Pharrell Williams ever hear/watch this C2C version of Happy before he penned his own song titled Happy, complete with dance video and contest? C2C released their own Happy song in December 2012 and Pharrell Williams released his version of Happy in November 2013, nearly one year later than C2C.  Perhaps it does not matter, for there is nothing new under the sun.  Regardless, C2C deserves some love, for they are a very talented group of guys who know how to muster up excellent music video producers as well.

UPDATE/ANSWER TO THIS POST/QUESTION: A poster on Reddit known as GTAVSUCKS wrote that he thought Pharrell had once admitted that Ce Lo Green wrote the song for Pharrell. However, after doing some research, was led to a story about the history of the song at Contact Music that states:  
 "In an interview with Howard Stern for his US radio show, Pharrell said: ''[Cee Lo Green] wanted to do it .. and he did do it. He sounded amazing on it. He burns my version! But ... how do I say this diplomatically? The powers that be, at the time, did not see it fit for him. Some folks on his team just felt that the priority should be on [Cee Lo's] album at the time [2012's 'Cee Lo's Magic Moment'], so they elected not to do that song."

C2C - Happy

Here is one more very cool song titled Delta :)

C2C - Delta

and maybe the coolest of their songs, maybe.... (because they are all pretty grooving)

Down The Road (staring Richie Jackson)

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