The accolades have been nonstop for the Mexican natives who met as teens, according to the DVD. Sanchez played drums in his brother’s metal band, and Quintero joined them on the guitar. She liked the passion of playing heavy metal. But acoustic music “equals freedom,” she says. And so when they eventually paired up, they concocted a kind of rock/Latin fusion sound, dipping into Metallica, Hendrix and Zeppelin.