In 1974, Cinquetti took part in the Eurovision Song Contest again, this time held in Brighton, Sussex, United Kingdom. Her song was called "Sì" (which translates as 'yes' in English, and which became quite controversial in Italy at the time, with a referendum on the legalisation of divorce in the offing, because of the title), and came second to Swedish foursome ABBA with their song "Waterloo".
An English-language version of the song, "Go (Before You Break My Heart)", reached number 8 in the UK Singles Chart in June 1974.
One of her other songs, "Alle Porte del Sole" (released in 1973), was re-recorded in English (as "Door of the Sun") and Italian by Al Martino, two years after its initial release, and reached No. 17 on Billboard's Hot 100 in the United States. Cinquetti's own English version of the song was released as a single by CBS Records in August 1974, with her original 1973 Italian version on the B-side.