Claim: Georg Jarno wrote just two good operettas and never wrote any operas.
Evidence: Before operettas, he wrote three operas: Die schwarze Kaschka (1895), Der Richter von Zalamea (1899) based on Calderon's El alcalde de Zalamea, and Der zerbrochne Krug (1903) based on Heinrich von Kleist's play; none prevailed.