Fusing traditional Brazilian music, psychedelia, rock and a good dose of pure experimentalism, with the release of their 1968 debut, Os Mutantes quickly became giants in the outer fringes of pop music, soon reaching mythic proportions. Their second album, Mutantes, released in 1969 the bandcontinued in this same vein of boundary crushing, featuring tracks like the futuristic 'Dois Mil E Um'.

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