From 1956 until 1965, there was no rule restricting the language(s) in which the songs could be sung. For example, in the 1965 Contest, Ingvar Wixell of Sweden sang his song in English. However, in 1965, a rule was imposed that a song must be performed in one of the official languages of the country participating. For seven years, this new language policy remained in place until 1973 when it was officially revoked from the official rules of the Eurovision Song Contest.