orologio en Altadefinizione. Concentric Beats is a documentary film about the US drum'n'bass music experience, focusing mainly on three cities: Los Angeles, New York and San Francisco. Besides featuring club and rave footage, the narrative of the film is carried through by over 70 interviews with some of the main protagonists of the drum'n'bass scene in the US as well as abroad. We listen as DJs, producers, club promoters, record label executives, dub-plate manufacturers, music journalists, and fans all speak on the history of the US drum'n'bass movement.