A few days ago in New Orleans a Gulf Coast benefit was held to help the region to deal with the onset of the oil spill due to the recent off -shore drill incident. Many artists came down to perform including Mos Def. The following video show Mos Def performing a new song called "It Ain't My Fault." Mos Def got a little help from Lenny Kravitz, Tim Robbins, Trombone Shorty, and The Preservation Hall Jazz Band. (via Okayplayer)