Los Yonic's have been a top-tier mainstay on Mexico's grupero scene since the release of their debut album, Que lo Sepa el Mundo, in 1975. Founded by drummer Johnny Ayvar and fronted by guitarist and frontman Jose Manuel Zamacona, they shifted the focus of grupero music from its origins in nostalgic Spanish-language covers of Anglo rock songs during the early 1970s to electrified originals rooted in traditional and regional Mexican music like rancheras, cumbias, and romanticos. After releasing their self-titled breakthrough album, 1986's Déjame Vivír, they ruled the decade as ...