What are the real title & composer of the tango heard in Un Chien Andalou?

The famous surrealist film. It can be seen & heard free and legal here:

http://www.archive.org/details/Lu_sBu_uelySalvadorDal_UnChienAudalou

Hear the tune only, here:

http://web.mac.com/brianleahy/iWeb/NameThisTune

The Tango is the first music heard in the film. I’m quite certain it’s not called merely "Argentine Tango" – as it is often called in materials relating to the film.

The 2nd piece is a well-known Wagner composition; don’t need that one.

Any tango experts out there?
Hmm, the samples (online at Amazon and iTunes) for Ole Guapa sound very similar, but not quite match.

"The tango is the famous "Ole Guapa", a traditional tango that has been recorded numerous times by different artists."