Spain was represented at the Eurovision Song Contest 1963 with the song "", composed by , with lyrics by Camillo Murillo Janero, and performed by José Guardiola. The Spanish participating broadcaster, (TVE), internally selected its entry for the contest. The song, performed in position 12, placed twelfth out of sixteen competing entries with 2 points.
Conflicting reports state that 's (TVE) aim was to use the to choose its entry for the Eurovision Song Contest 1963. The song "", composed by Augusto Algueró, with lyrics by Antonio Guijarro, had won the 1962 song festival performed by both José Guardiola and Monna Bell, but the result was declared null and void the day after the final because a fix was discovered in the voting process. Attendees were given a voting ballot along with their admission ticket; however, on the final night of the festival, more ballots were counted than attendees. The ten songs in the final were declared finalists equally, without any ranking.
TVE internally selected "", composed by , with lyrics by Camillo Murillo Janero, and performed by José Guardiola, as it entry for Eurovision among the numbers submitted by the winners of the song festivals held across Spain.
The Eurovision Song Contest was held on 23 March 1963 at the BBC Television Centre in London, United Kingdom. José Guardiola performed "" twelfth in the running order, following and preceding . Rafael Ibarbia conducted the event's orchestra performance of the Spanish entry. The song received two points from , placing twelfth in a field of sixteen.
TVE broadcast the contest in Spain on its television service with commentary by .