I find it interesting that Mexican movies and music became immensely popular in Yugoslavia in the 1950s. What a strange phenomenon that two distant and seemingly dissimilar countries would find common ground in film and song! The music is called Yu-Mex and you can learn more from this great site.
At first glance, there seems to be nothing particularly strange about this album cover. A bunch of ladies (and one guy) gathering around while Joe tickles the ivories. No big deal... except for the strange orange creature on his lap! What the hell is that thing? Perhaps it's Kuato from Total Recall, growing out of Joe's abdomen.