Clap along if you feel like a room without a roof!

The Pharrell Willimas hit "Happy" is a fun tune to sing at the top of your lungs and it is inspiring many covers and viral videos.

The super cute students at the Detroit Academy of Arts and Sciences choir have some serious talent! Their fun and spirited version even put a smile on the face of grumpy grouch like myself.

Here are some of the other "Happy" covers making the rounds, including "Glee" from last night!