Pharrell Williams 'Happy'

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.