Well as we are in Eurovision mode. This is the No. 2 from 1974.
"Go (Before you break my heart)" by Gigliola Cinquetti.
https://youtu.be/XiQ-g1ncjIsPossibly the unluckiest song in the history of Eurovision, it was, after all, the year of Abba. Any other year it would have won.
This was imho a much better song (and I am an ABBA fan) but Waterloo is not their finest hour in song writing terms.