With five new, young members surrounding original guitarist Sergio Dias, the new incarnation of the influential Brazilian band Os Mutantes, one of the wilder emanations of the late-1960s/early-1970s Tropicalia movement, revives not so much the group as its recherché, cult-inspiring brand. “Fool Metal Jacket” proposes a journey through mostly progressive and psychedelic terrain, layered with growly fuzz, ethereal sitars, but also open, airy spells garlanded with melancholic harmonies. Save a Gilberto Gil track, “Eu Descobri,” the record’s sole bossa nova-ish moment and a high point, the songs here are in English, and the writing is hit-or-miss, from the sad and beautiful “Into Limbo” to the rote flower-power of “Bangladesh,” one of a couple of head-scratchers here. Full story for BostonGlobe.com subscribers.