Os Mutantes is a Brazilian band formed in 1966, known for its pivotal role in the Tropicália movement, which blended Brazilian music with psychedelic rock and avant-garde influences. The group, founded by Rita Lee, Arnaldo Baptista, and Sérgio Dias, is celebrated for its innovative sound characterized by surreal lyrics, unconventional instrumentation, and a lively spirit. Their self-titled debut album and subsequent releases, including "Este Mundo é Meu" and "A Divina Comédiaou Ando Meio Desligado," reflect a playful yet critical approach to Brazilian culture and politics during a time of authoritarian rule. Though they disbanded in the early 1970s, Os Mutantes have experienced a resurgence of interest and continue to influence musicians around the world.