Hans Leip (1893-1983), the author and poet, also needs to be remembered. Best known for "Lili Marlene," the song arranged and composed by Norbert Schultze, he wrote about two girls, Lili and Marlene, in 1915, when he was a soldier at the front in 1915. It is found in his "Frühe Lieder," or Early Songs. His "Oh, Jonny" achieved some popularity in translation into an English version. His best known song in Europe is "Falado."
The midis, and German texts of these songs, are at LEIP