The New York Times has an article about how the subway trains on the 2, 4, and 5 lines sound as if they’re singing the first three notes to “Somewhere,” from West Side Story. (“There’s a place…”) The sounds aren’t notes, really, but screeches made by the DC/AC inverter, and the difference between them makes them register as a melody to the human ear. Reality as Rorschach test—we see in it what we want to see.

Related: Repurposing rumble strips to make roads sing.

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