As much as I said I'd stay clear of this song... I decided to give it another stab. This is the somewhat psychedelic take on it and in keeping with the colors green and red. Those colors seem very much in keeping with the time of the movie Metropolis... think of green gargoyles overlooking New York City. Green is maybe a corrosive color and red is passion. And you get to see Bill wearing red frame glasses, which look very cool!
Also, what struck me with the clanging guitar opening is that it sounds like chains on the men shuffling along. They are like a chain gang, and you hear the HUH... OHH, which was actually lifted from the 70s song Everybody Was Kung Fu Fighting. Amazing what freaky things work!