Pharrell Williams has stolen the No.1 spot from X-factor's Sam Bailey to become the last UK No.1 single for 2013. Straight from the Despicable Me 2 soundtrack, emanating pure joy with every perky note, and with a music video displaying some seriously enviable dance moves, Pharrell has provided us with just the mood-enhancing nugget we needed to see out the year.

http://youtu.be/y6Sxv-sUYtM

If you happen to have some time to kill, why not check out the 24 hour version. Lots and lots of happy.

Now clap along if you feel like happiness is the truth...