This is 'Night in Tunisia', the opening track from Hugh Masekela's 1974 LP 'I am not Afraid'. As far as I know this track is not available anywhere else on the internet, or on any commercially available CD. I heard it on Gilles Peterson's Worldwide Radio show and tracked it down on vinyl for $60 through Ebay. I think it is one of the rudest riddims around and it opened my ears to the whole world of Afrobeat. Masekela is the band leader and plays the flugelhorn. I've put it over a shot from a rooftop in Akihabara, Tokyo, and some footage from Tokyo's chuo line and Chiba's Uchibo line. Enjoy!