This film ends with a big party and lots of dancing. Nino Rota wrote a bunch of quadrilles, polkas and waltzes for the party.
The director needed a quickie recording of the party music to help him block out the scenes, so Rota hired a pick-up group to sight read the dances, and made a tape.
When the movie was finished, Rota rerecorded it all--but the director rejected the new version. He said it was
too polished.

He said it was supposed to be party music--everyone was supposed to be loose as a goose--so the original sloppy version was used in the movie.

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I don't do it for the money, babe. I do it to entertain people.-- Susan Boyle