Los Donneños were a 1950s American Norteño guitar, accordion and song duo formed by Ramiro Cavazos and Mario Montes and named after Donna, Texas. They were one of the first US groups to gain a following in Mexico. Ramiro Cavazos was lead singer and played guitar or bajo sexto. Mario Montes was second voice and played accordion. On some recordings they were joined by a string bass player, Rafael Gaspar.
References
Los Donneños Wikipedia(Text) CC BY-SA