It was held in Belo Horizonte, Brazil, following the country's victory at the previous contest with the song "Diálogo" by Claudia Regina and Tobías.

It was precisely the Mexican entrant Imelda Miller [es] who won the festival with the song "Qué alegre va María".

The palace, which was one of the biggest concert halls in Brazil and Latin America, had a seating capacity for over 2000 people, which makes it slightly bigger than the venue of the previous edition in Madrid.

The publicly financed and private broadcasters from Spain, Portugal, almost all the South American countries and the Caribbean Islands of the Dominican Republic and Puerto Rico took part.

The running order of the performances was decided, just like the previous year, by a draw that was organised by Rede Tupi in collaboration with the OTI a few days before the festival.

The host country, Brazil, represented by Nadinho da Ilha, appeared ninth on stage, while the performance round was closed by the Portuguese entrant Paco Bandeira with the song "Poema de mim".

Puerto Rico, Venezuela, Dominican Republic, and Bolivia used the backup juries present in the music hall due to telecommunication problems.

[1] The voting process ended with a tie between the Peruvian performer Gabriela de Jesús and her Mexican counterpart Imelda Miller.

[2] During this improvised superfinal to break the tie between Peru and Mexico, only one backup juror present in the hall from each one of the remaining twelve participating countries was able to vote.

[3] Finally, after a tense voting process, Imelda Miller, who represented Mexico, defeated the Peruvian entrant Gabriela de Jesús with only two points difference.

Another successful song was the Spanish entry "Algo más" by Camilo Sesto which became a smash hit both in Spain and in Latin América.