Fritz Lang meets Kraftwerk

This opening sequence from Fritz Lang's Metropolis presents an image of what life is like in the underground city where workers toil. It is a world governed by the clock and an alienating and monotonous division of labour (in a subsequent segment, we see the above ground world of tennis and gardens--much like the suburban camp described by JK Galbraith in the documentary below). Here someone has presented a mash-up of this opening sequence with a song by Kraftwerk. One often thinks about the relation between cinema and the city but here we are also invited to think about the soundtrack to the city. Since the advent of the Sony Walkman and on to the iPod and beyond, our experience of the city has often been set to music. What is the soundtrack that best captures the city for you?