"Yeah Yeah U Know It" was the lead single released from Keith Murray's fourth album, He's Keith Murray. It featured verses from Murray's fellow Def Squad members, Erick Sermon and Redman and was produced by Just Blaze. "Yeah Yeah U Know It" just managed to make it to the Billboard 100, peaking at 99, and to date is Murray's final to make it the chart.The single was released alongside "Fatty Girl", a collaboration with LL Cool J and Ludacris and G.