Originally Spanish broadcaster (TVE) entered Joan Manuel Serrat to sing "La La La", but his demand to sing in Catalan was an affront to the Francoist State dictatorship. Therefore, Massiel, who was on tour in Mexico, was brought in as a late replacement. In just two weeks, she had to rush back to Spain, learn the song, record it in several languages, travel to Paris to get a dress and go to London for rehearsals. She sang the song in the contest in Castilian Spanish with the new arrangement made to fit her. In her winning reprise, she performed part of her song in English, in addition to the original version, becoming the first winner to do so. The Norwegian national selection, Melodi Grand Prix, ended with Kirsti Sparboe and Odd Børre winning with the song "". However the composer, Kari Diesen withdrew the song due to receiving multiple accusations of plagiarism of the song "Summer Holiday" by Cliff Richard. The runner-up song in the selection, "Stress" would perform in the contest instead, where Odd Børre was chosen to be the singer.
Originally Spanish broadcaster (TVE) entered Joan Manuel Serrat to sing "La La La", but his demand to sing in Catalan was an affront to the Francoist State dictatorship. Therefore, Massiel, who was on tour in Mexico, was brought in as a late replacement. In just two weeks, she had to rush back to Spain, learn the song, record it in several languages, travel to Paris to get a dress and go to London for rehearsals. She sang the song in the contest in Castilian Spanish with the new arrangement made to fit her. In her winning reprise, she performed part of her song in English, in addition to the original version, becoming the first winner to do so. The Norwegian national selection, Melodi Grand Prix, ended with Kirsti Sparboe and Odd Børre winning with the song "". However the composer, Kari Diesen withdrew the song due to receiving multiple accusations of plagiarism of the song "Summer Holiday" by Cliff Richard. The runner-up song in the selection, "Stress" would perform in the contest instead, where Odd Børre was chosen to be the singer.