Mexico was represented at the OTI Festival 1984 with the song "", written by , and performed by Yuri. The Mexican participating broadcaster, Televisa, selected its entry through a national televised competition with several phases. The song, that was performed in position 15, placed third out of 21 competing entries. In addition, Televisa was also the host broadcaster and staged the event at the National Auditorium in Mexico City.
Televisa held a national competition with four televised qualifying rounds, two semi-finals, and a final to select its entry for the 13th edition of the OTI Festival. This thirteenth edition of the National OTI Festival featured twenty-eight songs in the qualifying rounds, twelve in the semi-finals, and six in the final. In addition to the general competition, awards were given for Best Male Performer, Best Female Performer, Best Musical Arrangement, Breakout Male Artist, and Breakout Female Artist among all the competing artists.
The shows were held at the National Auditorium in Mexico City, were presented by Raúl Velasco, and were broadcast on . The musical director was , who conducted the orchestra when required.
The four qualifying rounds were held on Saturdays 18 and 25 August, and 1 and 8 September 1984. Each round featured seven entries, of which the three highest-scoring advanced to the semi-finals. In each round, after all the competing entries were performed, each of the nine jurors cast one vote for each of their three favorite entries.
The nine jurors in the qualifiying rounds were: , , Pati Chapoy, Tito GuÃÂzar, Leopoldo Meraz, Jorge Neri, Marcos Olivares, Eduardo Salas, and .
The semi-finals were held on Friday 28 and Saturday 29 September 1984. The twelve songs that qualified in the qualifying rounds were distributed between the two semi-finals, and the three most voted songs from each semi-final went on to the final.
The six-song final was held on Sunday 30 September 1984. Eight jurors present in the hall for the qualifying rounds were also present for the final: Fernando Alcalá, Jaime Almeida, Pati Chapoy, Leopoldo Meraz, Jorge Neri, Marcos Olivares, Eduardo Salas, and Leonardo Velázquez; to which six new jurors were added: Vikki Carr, Marco Antonio Muñiz, Miguel Bosé, José Luis Perales, Lupita D'Alessio, and Dyango. The final was held in two rounds, shorlisting three songs for a superfinal. In the superfinal, each juror announced aloud one vote for their favourite entry.
The winner was "", written by , and performed by Yuri. The festival ended with a reprise of the winning entry.
In the final, the fifteen jurors voted aloud for the Best Male and Female Performer and Breakout Male and Female Artist among the three shortlisted artist in each category. The members of the orchestra voted for the Best Musical Arrangement Award among the three entries shortlisted.
José Roberto received the Best Male Performer Award; Yuri the Best Female Performer Award; Sergio Andrade the Best Musical Arrangement Award for ""; Jorge Muñiz the Breakout Male Artist Award; and Morenita the Breakout Female Artist Award.
Las 12 triunfadoras del Festival OTI 84 is the official compilation album of the thirteenth edition of the Mexican National OTI Festival, released by Melody in 1984. The vinyl LP features the studio version of the twelve songs qualified for the semi-finals.
On 10 November 1984, the OTI Festival was held at the National Auditorium in Mexico City, hosted by Televisa, and broadcast live throughout Ibero-America. Yuri performed "" in position 15, with Sergio Andrade conducting the event's orchestra, and placing third of 21 competing entries.