Chicago, 6:15 AM

The city roars & rumbles --
the individual sounds of cars, trains, and rooftop environmental conditioners merge into a constant sound ever changing pitch & timbre, like the cracking of ice on a frozen pond, 10,000 people humming tunelessly, a jumbo jet warming its engines on the tarmack, a distant tornado, an orchestra tuning spasmodically, and 100 other unidentifiable sounds all rolled into one long sustain.