Such a shame this will be inextricably linked to Despicable Me 2 as it stands up in it's own right as a great bit of pop/r&b/soul sort of thing... silky vocals, great production, what's not to like... and yes of course it surely makes everyone smile and be Happy!
I absolutely love this song. It is part of the Despicable Me 2 soundtrack which is one of the sweetest children's films made. Lovely incentive to love the moment and be happy. If you are not having the best day just listen to the song and it will make you smile.