out of the first fiinterim repo a lot of chaos and confusion but not immediate urgency. we are sifting through hundreds of pages that that report. isis may be expanding its reach as boko haram may be joining them. could they work together and do it well? we will talk about this coming up. take a listen to this. the art of commercial dance. >> reporter: from the tap to the chest, the jitter bug to the twist. most popular dances began life as underground sensations in america's african-american neighborhoods. they could create something fresh and vibrant. pop stars have been long tap into this long hidden treasure chest of movies and often transforming them into worldwide