Well, (fee paying) members of the European Broadcasting Union, actually.
Anyway, Eurovision was a lot more fun when they had to sing (at least in parts) in their national language.
I remember when they even had a live orchestra which EVERYONE had to use. They only used their own conductors.
Then countries started to split up and Yugoslavia turned into several separate countries. Then the ...stans and Baltics came along and we had several dozens of entries. With pretty much interchangeable techno doof-doof music.
And don't get me started with convoluted and incomprehensible, and ever-changing voting systems .
Still. Infuriatingly addictive to watch.