A few days ago it was sunny and breezy and I walked up Greenwich to the lunch place on the corner and some big machine in the construction site across the street was making music. An insistent, rhythmic phrase comprised of two distinct and counterbalancing melodies: Wee-DEE-da-DUH-huh followed by an EEE-ah-uh, EE-ah-uh. Sometimes the phrases would repeat in slightly different patterns, as though shifted by some marvelous intelligence, and yet maintain their tempo, and it was such a beautiful song that I nearly grasped the wrists of the office girl sitting on the bench in front of the restaurant with her sandwich and said, "Can you hear that?"