All active members of the OTI were eligible to participate in the OTI Festival. Both state financed and private broadcasters from member countries of the
Organization of Ibero-American States (OEI) were able to join OTI as full members. Since only one entry per country was allowed, in some cases, different broadcasters from the same country collaborated to participate and broadcast the festival jointly. The songs in the competition had to be original, no longer than 3 minutes, performed live accompanied by a full orchestra, and have all lyrics in Spanish or Portuguese. The OTI Festival was held for first time on 25 November 1972 at the of
Madrid. Broadcasters from thirteen countries took part in the first edition of the event.
Spain,
Colombia,
Brazil,
Venezuela,
Panama,
Portugal,
Bolivia,
Chile,
Peru,
Uruguay,
Argentina, the
Dominican Republic, and
Puerto Rico were the debuting countries. This first edition marked the first time in history that broadcasters from so many countries linked together via satellite to participate in a song contest. Following the first edition, broadcasters from the rest of the
Ibero-American countries progressively started taking part in the event. The festival expanded even further away from the traditional Ibero-American sphere, to the point that even the
United States and
Canada (which had large communities of Spanish and Portuguese speakers), the
Netherlands Antilles and
Aruba (which were Dutch but where
Papiamento, a
Portuguese-based creole language influenced by Spanish, was the most widely spoken), and
Equatorial Guinea (which is a Spanish-speaking African country) took part in the event. In 1992, the festival reached a record of 25 participating countries, which made the 1992 festival the biggest song contest in the world, even beating the 23 participants of the
Eurovision Song Contest 1992. Broadcasters from twenty-seven countries participated at least once in the festival, with Chile, Panama, Peru, Puerto Rico, and Venezuela participating in all twenty-eight editions. Some of the participating broadcasters, such as those from Aruba, Chile, Cuba, Mexico, the Netherlands Antilles, and the United States, selected their entries through regular multi-stage televised national selections. Other broadcasters selected their entries internally. == Hosting ==