To play Bach just at the great master Andras Schiff it is inevitable to get a complete understanding which includes the German language. Music and language are related sometimes insofar that the specific feelings are coming out more enhanced. Sir Andras Schiff had studied all what Bach had written and can tell us the hidden details of the melodies. This is still more important with Schubert‘s Lieder. The unique mysterious song: „Der Doppelgänger“ is one of the samples. I believe this applies also to songs like the songs by Nayyara Noor or Teresa Teng. The subtle romantic feelings are more enhanced when sung in their original language.