: A comprehensive music document on Scribd includes "BESAME MORENITA.mp3" specifically under the Los Sonors discography.

While "Besame Morenita" is a classic Colombian cumbia composed by Alvaro Dalmar, (a prominent Mexican group of the 1960s and 70s) recorded a popular version of it. Document References & Tracklists

If you are looking for the audio itself rather than the document:

: Historical records like the Catalog of Copyright Entries serve as official "papers" documenting sound recordings from this era, including those by Los Sonors.