And a few in it too Wolfgang! It is a very different sound from the Kölsch of Bläck Fööß, which the older people speak. In fact, in Köln it is fun if you understand a bit of Kölsch, but you never really need it. It's not like Bayern, where they often think they are speaking German when in fact they are speaking Bayerisch. There really are Bavarians who would not be understood anywhere else in the German speaking world. Most Kölner can do a passable imitation of German.