Ah, Bob. That song played a major, real life, role in a disaster 13 months prior to Titanic.
"Every Little Movement" had quickly percolated thru all stratas of society. Several reliable second day accounts, and quite a few anecdotal remembrances, reenforce that the younger Jewish girls in the Triangle Factory had an impromptu sing-a-long on that number in the ninth floor coat room, even as the eighth floor was burning and the exits to the street were being cut off.
The fire broke out after closing time on the last work day of the week, and many of the younger girls had worn their going-out clothing and were freshening up before meeting their dates or husbands. None of the Italian girls who survived recalled the song, but many of the Jewish girl survivors spoke of it breaking out, spontaneously, as they put on their hats and freshened their clothing. Which has led me to wonder if, perhaps, there was a Yiddish version then current. The song broke up, abruptly, as the rear windows along the ninth floor blew in and the main aisle to the exit ignited. Those who ran to the left from the dressing room door had about a 50/50 chance of surviving. Those who ran to the right had a nearly 90% mortality rate.
The song affixed itself to the disaster but, unlike "Nearer My God to Thee," did not become synonymous with the event. And, for whatever reason, while Mrs. Harris was singing it in the made for TV SOS Titanic, the entire "Every Little Movement" interlude was omitted from the made for TV Triangle Fire film from the same year.