¿Macavity? said: "Saw this last night and really loved it. Don't have much to add that hasn't already been said. I wanted to point out that when Tony and Maria are down at the subway platform, the train screeches a faint minor 7th that resolves to a Major 6th - which, of course, makes up the first three notes of "Somewhere". I was blown away by the sneakiness of it! Well I googled it to double-check, and it was true. Even more interesting - forgive me, I'm not a New Yorker - is that that sound has actually occurred in NY subways since 1999.
Here's a recent bit from a Vulture article that explains it better than I can:
"...the subway sound popped up thanks to the introduction of the electronic R142 subway cars, first installed in 1999 and common on the 2, 4, and 5 lines by then. The gist of the electrical engineering at play seems to be that those cars run on an alternating current, and as they sync up with the direct current from the third rail to power their motors, the steel vibrates at frequencies that just so happen to recall Bernstein’s score."
Ridiculously clever of Spielberg, or whoever, to include it."
Wow, that brings Spielberg's "sneakiness" into a new level. Last time I remember him doing something remotely close to that was in Close Encounters of the 3rd Kind when you can barely hear the 5 tones subtly playing during Roy's first UFO encounter scene at the railroad crossing.