In 1980 , he won the ninth edition of the Festival OTI , in Buenos Aires , Argentina , with his interpretation of the song '' Contigo Mujer '' , which scored 36 points in the event and became an instant hit all over the Puerto Rican radio . The song was composed by singer Ednita Nazario ( Who had represented Puerto Rico in the same festival the previous year ) and Laureano Brizuela . Another radio hit was " Yo Quiero Hacerte Olvidar " , the theme song for the telenovela " Martha Llorens "
ninth edition
OTI Festival 1980
Rafael José