Jarno's greatest successes were
Die Försterchristl (1907) and
Das Musikantenmädel (1910). His operettas
Das Farmermädchen and
Jungfer Sonnenschein were well received, whereas
Die Marine-Gustl,
Mein Annerl,
Der Goldfisch and
Die Csikosbaroness could muster only passing interest. Much of the success of his works was due to the distinguished presentation of their title roles by his brother's (Joseph Jarno) wife, the highly popular
actress and
soubrette Hansi Niese. He loved to introduce historically well known persons into his operettas;
Kaiser Joseph II in
Die Försterchristl,
Prince Eugene of Savoy in
Jungfer Sonnenschein,
Joseph Haydn in
Das Musikantenmädel. 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. His main success,
Die Försterchristl, had a run of 64 performances at
Broadway's
Herald Square Theatre in 1910/11 under the title
The Girl and the Kaiser.{{cite web ==Stage works==