Will.i.am has been busy in the studio this week, fine tuning a smash hit for Justin Bieber.

The Black Eyed Peas front man has produced hits for a number of chart toppers and he's so excited about the song he has produced for Biebs, he's even quoting himself. 

"I gotta feeling this song is [gonna] be bigger than huge," he tweeted.

"Last time I felt this way about a song is after I wrote and produced ‘o.m.g’," which he made for Usher.

Will.i.am went on to say, "I can’t stop listening [to] it."

We're sure we'll be saying the same thing when it's released.