Ornstein is a mirror held up to the world of the modern city. The first of his real compositions are like fragments of some cosmopolis of caves and towers of steel, of furious motion and shafts of nitrogen glare become music. They are like sensitive surfaces that have been laid in the midst of the New Yorks; and record not only the clangors, but all the violent forms of the city, the beat of the frenetic activity, the intersecting planes of light, the masses of the masonry with the tiny, dwarf-like creatures running in and out, the electric signs staining the inky nightclouds. They give again the alarum of dawn breaking upon the crowded, swarming cells; seven o'clock steam whistles on a winter morn; pitiless light filtering over hurrying black droves of humanity; thousands of shivering workers blackening Fourteenth Street. They picture the very Niebelheim, the hordes of slaves herded by giants of their own creation, the commands and cries of power in the bells, whistles, signals. The grinding and shrieking of loaded trains in the tubes, cranes laboring in the port, rotary engines drilling, turbines churning are woven through them. Blankets of fog descend upon the river; menacing shapes loom through it; rays of red light seek to cut the mist. Flowers that are gray and black blossom on the ledges of tenement windows giving on bare walls. And human souls and songs that are gray and black like them bloom in the blind air, open their velvet petals, their lustrous, soft corollas, from crannies and windows into this metal, this dun, this unceasing roar.