Mika is collaborating with Pharrell because everybody is collaborating with_Pharrell, and good for him. Their track is a dance track because every track is a dance track, which is probably good for somebody. (The guy who coined the term "EDM"? Cathy Guetta? Formerly unemployed club promoters?)
We mention this because the video for "Celebrate" shows exactly how this happens. Got writers' block? Only managing to produce a lot of balled-up paper, never managing to produce that one hit? Do you find yourself, instead of actually writing, despairing over your piano like this?
Eh, fuck it! Just go to the club. Anything can happen there. You could meet a girl. You could meet Pharrell. And you can party so hard, even your apartment miles away gets trashed from it.