The band was formed in 1979, made of the singers Fátima Padinha, Teresa Miguel (these two were part of Gemini before), Helena Coelho and Laura Diogo. In January 1980 the single "Amanhã de Manhã" (the entry for OSC26 and their most famous song in Portugal) is released. In the same year they entered Festival da Canção with the song "Doce", ending in 2nd place. In March 1980 their first album, "OK KO" was released. They went back to the Festival da Canção in 1981 with the song "Ali-Babá (Um Homem das Arábias)