A source close to the situation explained:
In fact, iHeartRadio thinks audiences could listen to it all day! Every day!
They've dedicated a radio station to playing the track over and over on a loop, 24/7, for over 13 days!
Pharrell's upbeat sound will be used to bring attention to the United Nation Foundation's International Day Of Happiness!
The Happython began on Tuesday, March 18th at 9 p.m. ET and will end on the 31st at midnight.
If you hear it again on the 1st, it might just be an April Fools joke! LOLz!