Tango in "Some Like It Hot"

In the movie “Some Like It Hot” Jack Lemmon (in drag) dances a wickedly funny tango with Joe E. Brown.

I want the song they are dancing to, but I can’t find the name of it via Google. I checked the soundtrack, but it did not have any likley sounding titles. I’d swear I can hear the tune of it in other tango pieces, so perhaps it is a traditional air. Does anybody know the name or a recodrding?

Thanks for any help.

Here’s the link to the imdb soundtrack listing . From glancing at the titles, could it be “La Cumparsita?”