Good laugh, though quite some of Twain's descriptions are simply wrong, nevertheless, for the entertaining value:
I think about French like Twain wrote about German. Probably the reason why I never got really good at it.
If one does want to learn about how beautiful and melodic and rythmic German language can sound and be, read R.M. Rilke. The outstanding poet of German language to me is not Goethe, for his rhyming I consider to be rather profane, nor is it Schiller or Lessing - but its Rilke for sure.