Rosana Fiengo (born March 7, 1954[1]), popularly known as Rosana and, posteriorly, as Rosanah Fienngo, is a Brazilian singer. Her greatest hit was the song "O Amor e o Poder", part of the telenovela Mandala soundtrack (1987).
Rosanah was born in São Paulo neighborhood of Brás, from Aldo Fiengo and Zenaide Romano Fiengo. She began to sing professionally when she was 13 on her father's band Casanova's.[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 1972, Tim Maia recorded her composition "Já era tempo de Você"[4]

In 1980 she participated in music festivals in television. 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.[5] In 1985, she participated in the Festival dos Festivais, and sang the song "Vidraça" in one of the qualifiers.[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.

In 1986, after recording some records and participating in others Rosanah sent a tape to TV Globo with a song – "Nem um toque", that ended up featured in the soundtrack of the telenovela Roda de Fogo (1986). With this exposure, the music was extensively performed on radios. Rosana then signed a contract with CBS / Sony Music that year, remaining on this label until 1993 when she migrated to Polygram.

Her greatest success, however, occurred in 1987, with the song "O Amor e o Poder," part of the soundtrack for telenovela Mandala. A version of Jennifer Rush's song "The Power of Love", the track stayed in first place for several consecutive weeks in the charts.