Becky's right, Franz. If you think we might be able to find the song for you, it's best to start a new thread. If we don't find it, we'll add it to our "unanswered requests" list so some kind and knowledgeable soul will find it in the future and respond. This page says the song is available on a CD called MUSICA MEXICANA DE SALON, by Raul Herrera. I didn't find any other mention of the song.
-Joe Offer-