The most important group in the history of mariachi music is Mariachi Vargas de Tecalitlán, founded in 1898 by Gaspar Vargas in Tecalitlán, Jalisco.

The style of music that would become Mariachi arose in the Jalisco region of Mexico, and was also called son jaliscience.

Synopsis. In a small Mexican town, a ruthless criminal, nicknamed Azul, breaks out of jail and vows revenge on the local drug lord, Moco, who put him there in the first place, by using a guitar case which carries a small arsenal of guns.

The Spanish language film was shot with a mainly amateur cast in the northern Mexican border town of Ciudad Acuña, Coahuila, Mexico across from Del Rio, Texas, the home town of leading actor Carlos Gallardo as the title character.