His biggest hit was "Para reconquistarte", it became a smash-hit all over Hispanic America during the whole 1993, it peaked at the number one position and spent several weeks at the top in Argentina, Mexico, Chile and Uruguay.

In 1995, Llunas was chosen internally by broadcaster Televisión Española (TVE) as their representative for the 24th edition of the OTI Festival with the song "Eres mi debilidad", written by Alejandro Abad.

[2][3] In the years following his Eurovision appearance, Llunas recorded in Portuguese and Catalan in addition to Spanish, and became particularly successful in Latin American markets.

In 2007, he was one of the contestants on the Mexican talent show Disco de oro, a competition between successful singers from different decades that aired on TV Azteca.

Marcos Llunas was deeply involved in Latin America and to this day his music is all the rage in countries like Chile, Peru, Argentina, Mexico, Paraguay.