The College of Southern Nevada’s newly formed competitive Mariachi Plata will make its local debut at 7 p.m. December 10 during a concert event featuring several popular local acts. Mariachi Plata is comprised of students from CSN’s mariachi courses, part of its fine arts music curriculum. They’ll make their local debut fresh off competing at the Mariachi Vargas Extravaganza in San Antonio, Texas, along with three CSN students scheduled to compete in the vocal finals.