In October 1966 Rita Lee and brothers Arnaldo Baptista and Sérgio Dias walked on stage for the first time as Os Mutantes to perform on a Brazilian TV show. In hindsight, it was a momentous occasion. Several months later they became involved with the Tropicî¡lia Movement, performing with Gilberto Gil at the 1967 Brazilian Popular Music Festival and recorded “Panis et Circenses” for the Tropicî¡lia album manifesto. In 1968, with arrangements by become a member or log in.