Genre: Rock
Os Mutantes ("The Mutants") are an influential Brazilian psychedelic rock band that were linked with the Tropicália movement of the late 1960s. It was formed by two brothers and a vocalist, but has gone through numerous personnel changes throughout its existence. After a hiatus from the late 1970s to the early 2000s, the band reunited for a tour in 2006.
Os Mutantes were formed in São Paulo, Brazil, in 1966 by 2 brothers: Arnaldo Baptista (bass, keyboards and vocals) and Sérgio Dias Baptista (guitar and vocals), and lead singer Rita Lee. They were originally named Six Sided Rockers. The Baptistas' father was a poet and mother a pianist, and the two had previously had a band called The Wooden Faces. Their current name was settled upon immediately before a performance on a Brazilian television program.
Source: http://en.wikipedia.org/wiki/Os_mutantes