When Rodrigo Sanchez (lead guitar) and Gabriela Quintero (rhythm guitar) met as teenagers in Mexico City, they discovered a mutual musical taste and formed the thrash-metal band Tierra Acida. When that ultimately didn’t pan out (they recorded music that was never released), the duo began to learn different guitar styles, taking a liking to fast, rhythmic acoustic guitars. Finding the Americas stifling, they set out for Europe, landing in Dublin, where Rodrigo y Gabriela honed their fast and lively acoustic sound (incorporating some Zeppelin and Metallica along the way) in pubs and on streets. Then one-time busker Damien Rice asked them to tour with him and things eventually took off. Ever since, Rodrigo y Gabriela (above, performing “Somnium” and “Torito”) have been mashing up rock, classical, Latin, world music and heavy metal into their own unique sound over the course of several acclaimed live albums and studio full-lengths. The most recent of which, 9 Dead Alive (stream it below), just came out today. The new tunes eschew some of the pair’s Latin influences in favor of straight-ahead (acoustic) rock. According to AllMusic, “There isn’t a dull moment in these 41 minutes.” And furthermore, “This album evidences an expanded creative reach for the pair, even as it reengages the sharp edges they displayed on earlier recordings.” Rodrigo y Gabriela celebrate the new release with three nights at the Beacon Theatre, Thursday, Friday (sold out) and Saturday.