The track was recorded to accompany the soundtrack to the movie Despicable Me 2.
Pharrell Williams has returned with his new song 'Happy'.
The new track is taken from the soundtrack to the movie Despicable Me 2.
The up-lifting track also saw the star release a 24-hour music video project for the track on 24hoursofhappy.com.
It was the world's first 24-hour video and sees Pharrell making an appearance 24 times during the long-form promo.
There are also several high profile cameos in the video – from Steve Carrell, Jamie Foxx, Kelly Osbourne and Jimmy Kimmell.
Watch the official video at the top of the page, which is a four-minute condensed version of the bigger 24 project.