OTI Festival 1978 in the seventh edition of the OTI Festival which was held in Santiago , Chile on December 2 in the Municipal Theatre of Santiago . This edition of the festival was presented by Miss Chile 1975 Raquel Argandoña and the news journalist Raúl Matas , who had previously presented the inaugural OTI Festival back in 1972 in Madrid . In this year 's edition in which many changes took place the winner of the show was the Brazilian entrant Denise de Kalafe with her song " El amor ... cosa tan rara " ( Love ... such a strange thing )
inaugural OTI Festival back in 1972
OTI Festival 1972
OTI Festival 1978