Thinking that the quartet would sound better, Diestro replaced the proposed male singer with another woman, Moraima Secada.
Her career kind of languishing, Omara was brought back to popularity thanks to the fact that she made part of the Buena Vista Club phenomenon, a group integrated by old musicians forgotten by the public and the music-industry-controlling government.
The Cuarteto d'Aida was part of a post World War II blend of jazz and Cuban bolero movement in Cuba known as "feeling" or "filin", which renovated the traditional harmonies and lyrics of the music on the island.
The quartet could basically sing any type of song, from standards like Maxwell's "Ebb Tide" to a guaracha and a rhumba, though the bolero was central to their style.
Omara's sister, Haydee, stayed in the United States after the quartet finished a gig in the Fontainebleau Hotel in Miami.