Here is Marek Weber und Sein Orchester with singing by then famous (and now forgotten) star of stage and screen Siegfried Arno. He is singing "How can he help it? Sigismund is so beautiful..." (or so I'm told by the YouTube poster, not being German literate myself).
I know almost nothing about this band. All I know is that Marek Weber was Czech and that a lot of his musicians and singers were Jewish, so I presume they went out of business when You Know Who with the funny little mustache got voted into power in 1932.
Marek Weber and Siegried Arno call to my mind Christian Schad's paintings of the rooftop Bohemia of 1920s Berlin, all the ne'er-do-well fallen aristocrats, underworld figures, artists, actors, musicians, and glamorous transgenders of that time and place.
Count Saint Genois d'Anneaucourt, 1927
Christian Schad's self-portrait, 1928
For us looking back in hindsight, it all has the pathos of a doomed culture, a last fling before the lights go out. We look at them and wonder whatever happened to all these people.
See ya on the Ku'dam!