For the third time in the 18-year-old history of the Eurovision Song Contest, Luxembourg had the honour of hosting the event with 17 nations present. After ending up in last position two years in a row, Malta decided to withdraw from the contest. Austria decided not to participate either. Instead, a new country joined the song contest, Israel. It was the first non-European country to enter the contest. Israel was allowed to do so because the country was already a member of the European Broadcasting Union. With the Israelis participating, the security control was unusually tight and special security measures were put in place for the Israeli delegation. Another important rule change for the 1973 Eurovision Song Contest was that the participants could choose the language in which they wanted to sing their songs. This rule remained in place until 1976 before being re-introduced in 1999.
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