La Grupera Radio is a web based internet radio station from Piedras Negras that plays Grupera, Norteño, Ranchera genre of music. The Radio Station Music ... See more Grupera Grupera, Northern and Ranchera Transmit The 24 Hrs a day 7 Days Of The Week With Quality Sound From 128 K-Bits Per Second from Piedras Negras, Coahuila Mexico To The World.