Rodrigo Sánchez and Gabriela Quintero can do more with two acoustic guitars than many bands can manage with full instrumentation and a fortress of amplifiers. The Mexican guitarists’ approach is anything but old fashioned as their music draws just as much from heavy metal as it does from traditional flamenco influences. While their new album, Mettavolution, might not initially seem as radical as Rodrigo y Gabriela’s early recordings such as 2002’s Re-Foc, 2014’s 9 Dead Alive and 2012’s Cuban-themed Area 52, it includes deft rhythmic interplay between the two guitarists as well as more overtly dazzling soloing by Sánchez. Tangled, fast-moving workouts like “Terracentric” and “Krotona Days” eventually culminate in a stylized, nearly 19-minute remake of Pink Floyd’s “Echoes.”

Greek Theatre, 2700 N. Vermont Ave., Los Feliz; Tues., July 23, 8 p.m.; $35.50-$102.50. (844) 524-7335,

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