http://robertoflackchronicles.com/2009/07/14/canibus-x-big-pun-x-mos-def-x-dmx-xmic-geronimo-etc/

old as shit, none of them freestyled neither

Yeah it's not freestyle, just going over some new verses.
It's cool to see them all together though.
LOL @ Canibus talking shit because he was the best known at the time.