This is my first time in your country, and I was wondering if there are any good places to play musikspiel near Koln! I was fortunate enough to find your booth at gamescom, so I figured I would drop in and say hi on your forum! I'll probably come by the booth again tomorrow and play a couple more games.
I'm glad to see you have a pretty strong community around here!
sadly, there are almost no active arcades left in Germany, and those who did survive don't have rhythm games. The only place in Northrhine-Westphalia where you can still play DDR is TaKe's Gaming Bar in Krefeld, which is about an hour's drive from Cologne. There's also the Giga Center, which is the last remaining arcade in Cologne, but they haven't had any rhythm games for over 2 years and aren't interested in the topic anymore. Sorry to give such a disappointing answer, but that's all we have!