Georg Jarno was a Hungarian who composed operettas, just a couple got good reviews and one had a run of 64 performances and he also wrote three operas with no success.
Georg Jarno (3 June 1868, in Buda  25 May 1920, in Breslau) was a Hungarian composer, mainly of operettas. His operettas Das Farmermadchen and Jungfer Sonnenschein were well received, whereas Die Marine-Gustl, Mein Annerl, Der Goldfisch and Die Csikosbaroness could muster only passing interest. 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. Operettas Die Forsterchristl His main success, Die Forsterchristl, had a run of 64 performances at Broadway's Herald Square Theatre in 1910/11 under the title The Girl and the Kaiser. 
