Really, in this case, the hackneyed blogger speak of “le sigh” is warranted. QUI ÊTES-VOUS, POLLY MAGGOO? (1966):
And “le purr” if you were the cinematographer on THE OCTOBER MAN (1947). I’m talking about you, Erwin Hillier:
Train whistles really do a number on the psyches of post-war Brits, here and in Brief Encounter especially. Are there other films where train whistles toot themselves into the plot? Maybe Strangers on a Train?