Coincidence?

I put on a Chelo Silva album of rancheras and picked up the Chronicle. In it, there was an article on the Texas Music Museum and its current exhibit featuring Tejana singers, with particular mention of Chelo Silva. The album is a compilation from Mexico, exitos rancheros, Discos Musart, date unknown, with no information about the various conjunto, mariachi, and orquesta accompaniments. The arrangements sound like they're from the late 'fifties or very early 'sixties.