I have given every operetta the style demanded by the space and time in which it is set." (Eduard Künneke. Driven by success, Künneke committed himself to the genre of the operetta in the 1920s and 1930s. The diversity of his many operettas reveals Künneke's enormous adaptability to the stylistic currents of entertainment music at that time. He had most international success with Der Vetter aus Dingsda (1921), with which Künneke has almost exclusively been identified up to today. His successful operettas were even adapted for London and New York. Herz über Bord was premiered in 1935, initially at the Zurich Opera and was performed almost 500 times between 1935 and 1937, including in Dresden, Stuttgart, Stockholm and Berlin. The Berliner Zeitung noted: "Once again, we can listen to operetta music written by an artist, a man of taste. Every number has it's own weight.