Keri Hilson ft Kanye West, Ne-Yo – Knock You Down (2009) October 5, 2009 | No Comments Music video by Keri Hilson performing Knock You Down. (C) 2009 Mosley Music/Interscope Records #KeriHilson #KnockYouDown #kimsvideowall-rnb #KanyeWest #Ne-Yo RNB 4,011 views