Moreira, Maria Beatriz Cyrino, and Rafael dos Santos. 2014. “The Case of the ‘Som Imaginário’ Band: : Counterculture, Experimentation and the Music Industry Between the 1960s and 1970s in Brazil”. Per Musi, no. 30 (November):1-11. https://periodicos.ufmg.br/index.php/permusi/article/view/38864.