All labels are useful if they help finding what one is looking for. "World music" even can be music from Germany. There are a lot of people from quite different ethnic backgrounds living in our coutry who like to play music. The neighbours who also like playing music come from a different background and know a different music. But they like to play together. So the outcome may be a potpourri of music from different parts of the world played on different instruments originally not made for the music they play now. There's nothing wrong with that if people like it.

So you could hear a Hungarian dance played on an African instrument together with a fiddle and a trumpet, the next piece could be a traditional German song with a half Scandinavian and half near East instrumentation and so on. In some moods I really like that music. Would there be a better label for a mixture of traditional music (mixture even within the tracks) from all over the world played and recorded in Germany than "World music"?