The central objective of this work is to critically discuss the production and reception of Brazilian popular music during the seventies. Opposite to what happened to bossa nova, tropicalism and the 80s rock movement, the reflections about this period of great importance in our music seem to be disperse and fragmented, not presenting the consistency of the analyses of the aforementioned movements. This consistency is not based on an homogeneous interpretation of the cases, on the contrary, the diversity of interpretations is what confers to them a privileged position at the Cultural Studies field in Brazil. The exact proposal of this dissertation is to join this disperse and fragmented theoretical-reflexive production about the 70s presenting one more voice, an outlook, a written body that somehow may intercede in the debates on Brazilian culture and its vitality at that moment. My proposal is to discuss questions that somehow affected the artists, audiences and critics of this decade, taking in consideration the specificity of a political context of authoritarism and violent restrictions of freedom of speech and opinion, whilst not accepting any form of determinist reading of this condition.