Tickets starting at $35 + fees Os Mutantes stands as an influential Brazilian rock band, closely associated with the Tropicália movement, a dissenting musical force during the Brazilian dictatorship of the late 1960s. The band unequivocally ranks among the primary groups in Brazilian rock.Os Mutantes is such an awesome Brazilian rock band! They were part of the Tropicália movement, a really cool music scene during the Brazilian dictatorship in the late 1960s. This band is considered one of the main groups in Brazilian rock. Presented by Chop Shop. This is an All Ages event