Monica- Knock Knock

The Princess of R&B showcases her head voice & falsetto on this underrated Kanye West produced single from After The Storm. Sharon Osbourne seems to be pleased! OCTOBER 2008 MONICA returns with all star production from Polow Da Don, Soulshock & Karlin, Stargate, Bryan Michael Cox, Diane Warren, Lil Jon, Drummer Boy, Babyface and R. Kelly. Just added Ludacris! GET READY cuz Monica is STILL STANDING!!!