Gates open at 5:00 PM Puertas Abiertas A Las 5p. Three generations of Mexican music on one stage. Mariachi Vargas de Tecalitlán, the most storied mariachi in the world, headlines an evening of pure ranchera tradition alongside co-headliners Beatriz Adriana and Chayito Valdez Hija ? a night of the songs that raised us, performed by the artists who defined them....