A progressive rock-band formed in the first ’70s in Rio de Janeiro by way of a core of music artists through the Minas Gerais condition, the Som Imaginário developed an influential profession and in addition backed performers like Milton Nascimento, Elis Regina, Gal Costa, Fafá de Belém, Sueli Costa, Carlinhos Vergueiro, and Jards Macalé in live shows and recordings. The group was shaped by Wagner Tiso (keyboards), Zé Rodrix (body organ/percussion/tone of voice/flutes), Robertinho Silva (drums), Tavito (12-string electric guitar), Luís Alves (bass), and Laudir de Oliveira (percussion), around which Toninho Horta (guitars) and Nivaldo Ornelas (saxes) ultimately performed. Their biggest strikes had been “Feira Moderna” (Fernando Brant/Beto Guedes), “Hey Guy” (Zé Rodrix/Tavito), “Cenouras” (Fredera), and “Nova Estrela” (Wagner Tiso). The group was created to back again up Milton Nascimento in his display Milton Nascimento, Ah! E O Som Imaginário, in 1970, in the Opinião theatre (Rio de Janeiro). Quickly afterward, Laudir remaining the group (he’d use Chicago), having been changed by Naná Vasconcellos, who also remaining the group within the same 12 months, while Fredera (acoustic guitar) became a member of it. For the reason that same 12 months, the group documented its 1st LP, Som Imaginário, and participated in Nascimento’s Milton. In 1971, the Som Imaginário do the film Nova Estrela, currently without Rodrix. With Fredera, Alves, and Silva having remaining the group, Novelli (bass) and Paulo Braga (drums) had been admitted. The 3rd album, Matança perform Porco (1973), experienced as its name monitor a Wagner Tiso structure that were the theme of the Rui Guerra film Operating-system Deuses e operating-system Mortos (1970), as well as the album experienced as shows “Armina” and “Nova Estrela,” both by Tiso.