In 1980, international label CBS Records International, (now Sony Discos), signed her up into their line-up. "Tanto Amor" (So much love) composed by Lou Briel, was the first hit song of that album named "Fantasia" produced by Pepe Luis Soto. She then released another album "Historia de Amour" which included many top hits. In 1983, she won the Buga Festival, in Buga, Colombia with a song that she wrote her self called "Sí" (Yes). Her next release in 1983, Sueños, continued her ascent as one of the most important and best selling female singers in Puerto Rico. This album marked a radical change in sound and image for Monge, moving towards the Latin pop tendencies of the time while keeping her interpretative delivery.