I've seen the show a couple of months ago and have to say that it's not very good. After all it has a good set design (though I only have other german productions to compare). The music was the same pop stuff they allways want to heare in Germany - Showtune simply doesn't exist in their vocabulary. Worst example, in my experience: "Engel aus Kristall"...
The biggest problem, though, was that they talked with a strong american accent, allthough they ARE NO americans!!! They allways do it here - WHY???
All things considered it's very professinal, but not really good. Loud sound and a lot of special effects can't make you forget the bad music, the crappy book and the (good dancing and good singing, but) badly acting "Musicaldarsteller" (Musical actor), as it is called here...
I'm the german Ethel Merman, don't you know... ;-)