Pharrell Williams – Happy (Ost. Despicable Me 2)

You could say "Happy" is suitable as a children's song. You must be singing along with the kids for “Happy”. The single was on Williams' album "Girl" before it became a massive global hit for being the soundtrack for the animated film "Despicable Me 2". The song "Happy" became the best-selling song of 2014, even a few years later.