In 1969, victory was shared between four countries. Which were they?

Explanation

All four countries had 18 points. The year after, the rules where changed to avoid a similar situation. The winning songs were "Vivo cantando" from Spain, "Boom bang-a-bang" from the UK, "De troubadour" from the Netherlands and «Un jour, un enfant» from France. Austria refused to participate in 1969 because of Spain's former dictatorship, whilst the youngest participant at that time, 12 year old Jean-Jaques participated for Monacco.