Legendary Norteño band Grupo Intocable brings its influential mix of conjunto, folk rhythms and pop ballads to the Del Mar Fairgrounds for this year’s San Diego County Fair. Vocalist-accordionist Ricky Muñoz and drummer René Martínez founded the band in the early ‘90s in Zapata, Texas, and they’ve gone on to score dozens of Top 10 singles, as well as multiple Latin and American Grammy Awards, along the way. (The group’s popularity grew so big, they even released their own iPhone app.) Known for their catchy, romantic hooks and tight harmonies, Intocable is sure to deliver a set filled with one hit after another, from “Y Todo Para Qué?” to “Enseñame a Olvidarte” to “Eres Mi Droga,” and beyond.