sentences:  When they arrive at the Silbersee, they find it miraculously still frozen solid, and they set out across it as Fennimore's voice is heard singing, ""Wer weiter muss, den trägt der Silbersee"" (Silverlake will bear whoever must go farther).The theatrical form of "Der Silbersee" is difficult to classify and most closely resembles a singspiel, though with greater dramatic demands placed on the acting.As in his other works, Weill uses a broad variety of forms (songs, arias, duets, quartets, choruses), musical styles (tango, funeral march, waltz, polka, foxtrot, march) and conventions (revenge aria, moritat, Totentanz, and dialogue spoken over elaborate musical accompaniment, i.e., melodrama).