After having held the contest last in 1973, Luxembourg played the host for the 1984 Eurovision Song Contest. The total number of participants was 19, one country less than in the preceding year as Greece decided not to enter a song. The contest also clashed with Israel's Remembrance Day, so the country wasn't present in Luxembourg either. Ireland returned to the contest though, finishing second. The Irish song was written by former Eurovision winner, Johnny Logan, under his real name Sean Sherrard. The song Terminal 3 was performed by Linda Martin, who later returned to win the Eurovision Song Contest in 1992.
Sweden unexpectedly won the contest with the song Diggi-Loo Diggi-Ley performed by three brothers called Herrey's. The Swedish brothers performed first on the night and won over the juries with their catchy tune, energetic dance routine and their golden boots. The song became a hit in many countries, but is still ridiculed today due to its nonsensical title. The Italian entry I Treni Di Tozeur by Alice and Franco Battiato also became a smash hit in Europe despite the fact that it only came fifth on the night.