The "Know U Down" Video is the 4th single out of "In a Perfect World..." LP by Keri.

The song and video featuring Kanye and R&B singer Ne-Yo.

The song produced by Danja. The album is a mad production collabo of Timbaland (Timothy Mosley), Polow-Freache Jamal Fincher Jones (Polow da Don), Floyd "Danja" Hills, King Logan and a few more ("The Clutch" production crew).

The music vide directed by Chris Robinson (also made Big Pun - 100% , P. Diddy - Bad Boy for Life, Jay-Z - Bonnie & Clyde, etc)