It’s been in the chart for 9 months, was released as part of the movie soundtrack for Despicable Me 2 and was originally recorded by Cee-Lo Green.


As if those weren’t enough memorable facts about Happy, the song has just added another gong to its credits.


That of the UK’s most downloaded track of all time in the Official Download Chart.


It overtakes Blurred Lines, by Robin Thicke, which Pharrell Williams appears in.


Pharrell performed the first night of his European tour on Tuesday, taking to the stage in Manchester.


“It’s pretty unbelievable,” Pharrell said.


“Considering the fact that like, I’m not from here.


“It’s also an honour because, you know England and Holland were the first places to really embrace N.E.R.D., kind of like, as artists.


“And I never expected any of this. Look up and fast forward to this moment, like I never expected to be here, doing this interview.”


He added: “It’s really a pleasure. And I know I’ve said things of this sort before, but you know, once again I’ve just been rewarded by the universe and I’m just appreciative, because I know that this is not my doing.


“A lot of people do songs and don’t end able to come here and say thank you. So I’m thankful.”


Speaking on the red carpet of the recent GQ Men of the Year awards, he said he didn’t feel the pressure to produce other massive hits as big as Happy.


“When you’re having a great time, there’s no pressure. So if you make music because you want to have a great time then you should be ok.”