Hi Diki
The Euro-Sound started in Germany and spread out to the clubs, bars and party capitals of Europe, it should not be seen as the European Sound par see. (Euro-Sound is a General Style of music)

While chart tunes are played in the European Clubs, Bars and Party Capitals, most of the music is unique to these types of premises, and does not feature in the charts.

Because the Euro-Sound is a style, it does not relate to any specific instrument. (Although keyboards in general do tend to predominate)

For further examples, go to the unused styles in your keyboard, and you will find plenty of styles (And OTS) with Euro within the name. (Just add reverb to get the bright club sound)

Regards

Bill