Look At Me Now by Chris Brown (ft. Lil Wayne and Busta Rhymes)

Zac Brown still #1 on the country charts. Foo Fighters still #1 on the rock charts. Katy Perry still #1 on the pop charts.

Chris Brown is #1 on the R&B charts

 http://www.youtube.com/watch?v=8gyLR4NfMiI