[3] In 1969, Rosanah was vocalist for the band Cry Babies alongside musicians like Luiz Carlos Batera, one of the founders of Banda Black Rio.

in 1981 she was qualified in Rede Globo's MPB Shell Festival with the song "Pensei Que Fosse Fácil, mas não É", composed by Zé Rodrix.

[6] Also in that year, Rosanah participated in the children's TV show A Era dos Halley by Augusto César Vannucci, singing alongside Guilherme Lamounier the song "Luz de Mim" by Daltony Nobrega.

[citation needed] In 2014, the singer sued the Wikimedia Foundation (the organization that maintains Wikipedia) and Google, claiming that the sites spread false information and offensive facts to her honor in her biography, such as a supposedly wrong date of birth.

[16] However, in July 2017, Rosanah lost the case that moved, because the Court of Rio de Janeiro understood that neither Google nor Wikipedia were responsible for the information.

In the decision, Judge Márcia Cunha of the 21st Civil Chamber stated that the artist's age had been taken from the TSE database, since she was a candidate for Rio de Janeiro councilor.