One annual holiday concert will have a different beat this year. The Youth Orchestras of Fresno presents “Viva Mariachi!” in a concert featuring three ensembles and 250 musicians. The program includes singer Beatriz Herrera performing songs arranged by Arturo Rodriguez, known for Mexican Christmas tunes, along with “La Noche de los Mayas” by Silvestre Revueltas and a new work, “El Laberinto de Soledad,” by Juan Pablo Contreras. The Roosevelt High School Mariachi Band will add to the festivities. Adam Elmore and Thomas Loewenheim conduct. Details: 4 p.m. Sunday, Dec. 13, Shaghoian Hall, 2770 E. International Ave. www.youthorchestrasfresno.org, 559-275-6694. Tickets are free, although a donation at the door ($15 suggested for adults) is appreciated. All seats are reserved, so reserve early to ensure seating.