VIDEO: Mos Def, Jim Jones, Black Keys Perform on David Letterman.

For those of you who didn’t check out BlakRoc when it dropped on Black Friday (you should have because we warned you), here’s your chance to watch a pretty amazing performance by The Black Keys with new buddies Mos Def and Jim Jones. They were on Letterman this past Tuesday, 12/8.

“Coochie”