Table:
text: List of operettas by Ziehrer
List
List
Title Genre Sub_divisions Libretto Première_date Place_theatre_
Mahomed`s Paradies Burleske-Operette 1 act Composer 26 February 1866 Vienna, Harmonietheater
Das Orakel zu Delfi Burleske-Operette 2 acts Carl Costa 21 September 1872 Linz, Landestheater
Cleopatra, oder Durch drei Jahrtausende (together with: Richard Genée and Max von Weinzierl) fantastic burlesque 3 sections J. Steinher 13 November 1875 Vienna, Komische Oper
König Jérôme oder Immer lustick! Operette 4 acts Adolf Schirmer 28 November 1878 Vienna, Ringtheater
Der kleine Don Juan Operette   November 1879 Budapest, Deutsches Theater
Wiener Kinder Operette 3 acts Leopold Krenn and Carl Wolff 19 January 1881 Vienna, Carltheater

text: List of operettas by Ziehrer
List
List
Title Genre Sub_divisions Libretto Première_date Place_theatre_
Ein Deutschmeister Operette 3 acts Richard Genée and Bruno Zappert 30 November 1888 Vienna, Carltheater
Wiener Luft Posse mit Gesang 3 acts Benno Rauchenegger 10 May 1889 Vienna, Theater an der Wien
Der bleiche Zauberer indianisches Lagerbild 1 act Isidor Fuchs, based on an Indian story by James Fennimore Cooper 20 September 1890 Vienna, Theater an der Wien
Der schöne Rigo Operette 2 acts Leopold Krenn and Carl Lindau 24 May 1898 Vienna, `Sommertheater Venedig in Wien`
Die Landstreicher Operette Prologue and 2 acts Leopold Krenn and Carl Lindau 26 July 1899 Vienna, `Sommertheater Venedig in Wien`
Die drei Wünsche Operette Prologue and 3 acts Leopold Krenn and Carl Lindau 9 March 1901 Vienna, Carltheater

text: List of operettas by Ziehrer
List
List
Title Genre Sub_divisions Libretto Première_date Place_theatre_
Der Fremdenführer Operette Prologue and 3 acts Leopold Krenn and Carl Lindau 11 October 1902 Vienna, Theater an der Wien
Der Schätzmeister Operette 3 acts Alexander Engel and Julius Horst 10 December 1904 Vienna, Carltheater
Fesche Geister Operette Prologue and 2 sections Leopold Krenn and Carl Lindau 7 July 1905 Vienna, `Sommertheater Venedig in Wien`
Über`n großen Teich (together with: Edmund Eysler, Bela von Ujj and F. Ziegler) Operette  Adolph Philipp 2 September 1906 Vienna, Theater an der Wien
Die Spottvogelwirtin  3 acts Rudolf Oesterreicher 1906 Vienna

text: List of operettas by Ziehrer
List
List
Title Genre Sub_divisions Libretto Première_date Place_theatre_
Ein tolles Mädel (English: Mlle Mischief) Vaudeville-Operette Prologue and 2 acts Wilhelm Sterk (after: Kurt Kraatz and Heinrich Stobitzer) (English: Sydney Rosenfeld) 24 August 1907, English version: 28 September 1908 Wiesbaden; English version: New York City, Lyric Theatre;
Am Lido Operette 1 act Ottokar Tann-Bergler and Alfred Deutsch-German 31 August 1907 Vienna, Kolosseum
Der Liebeswalzer Operette 3 acts Robert Bodanzky and Fritz Grünbaum 24 October 1908 Vienna, Raimund Theater
Herr und Frau Biedermeier Singspiel 1 act Wilhelm Sterk 9 January 1909 Munich, `Kleine Bühne`
Die Gaukler Operette 1 act Emil Golz and Arnold Golz 6 September 1909 Vienna, Apollotheater
Ball bei Hof Operette 3 acts Wilhelm Sterk (after the comedy Hofgunst by Thilo von Trotha) 22 January 1911 Stettin, Stadttheater

text: List of operettas by Ziehrer
List
List
Title Genre Sub_divisions Libretto Première_date Place_theatre_
In fünfzig Jahren — Zukunftstraum einer Küchenfee Burleske-Operette 2 acts Leopold Krenn and Carl Lindau 13 January 1911 Vienna, Ronacher
Manöverkinder Operette 2 acts Oskar Friedmann and Fritz Lunzer 22 June 1912 Vienna, Sommerbühne `Kaisergarten`
Der Husarengeneral (new version of Manöverkinder) Operette 3 acts Oskar Friedmann and Fritz Lunzer 3 October 1913 Vienna, Raimund Theater
Fürst Casimir Operette 3 acts Max Neal and Max Ferner 13 September 1913 Vienna, Carltheater
Das dumme Herz Operette 3 acts Rudolf Oesterreicher and Wilhelm Sterk 27 February 1914 Vienna, Johann Strauss-Theater
Der Kriegsberichterstatter (together with: Edmund Eysler, Bruno Granichstaedten, Oskar Nedbal, Charles Weinberger) Operette 8 scenes Rudolf Oesterreicher and Wilhelm Sterk (1914) 

text: List of operettas by Ziehrer
List
List
Title Genre Sub_divisions Libretto Première_date Place_theatre_
Im siebenten Himmel Operette 3 acts Max Neal and Max Ferner 26 February 1916 Munich, Theater am Gärtnerplatz
Deutschmeisterkapelle Operette  Hubert Marischka and Rudolf Oesterreicher 30 May 1958 Vienna, Raimund Theater
Die verliebte Eskadron Operette 3 acts Wilhelm Sterk (after B. Buchbinder) 11 July 1930 Vienna, Johann-Strauß-Theater

Question: Which genre is represented most frequently in this table among the list of Ziehrer's operettas?