You may not recognize the lingo, but chances are you've heard their guttural rumbling before. Human beatboxers first appeared in the early eighties, when freestyle rappers often relied on them as mobile percussionists. They took their name from the drum machine --- or beat box --- that DJs used for their pre-programmed rhythm tracks. After falling off the map for a few years, human beatboxing is back in full force. Produced by Derek John.