Ka's voice sounds like the smokiest parts of Guru, Tricky and Raekwon's vocal chords were marinated in a barrel of Scotch for about half a century before being committed to tape. Roc Marciano is probably one of the only MCs out here who can match him for pure gravel and the blunt impact of to-the-point rhymes. So it's only fitting that the two square off on "Iron Age" this latest video from Ka's Grief Pedigree (watch below--I do believe at this rate he's going to self-direct a video for every one of these things). And that's not the only things the indie vet has been up to on his busy-being-reborn program. Catch up with some of his other activities (talking boombox science with TDK and performing live at Public Assembly here in Brooklyn, for two) after the jump.