Question: Die Fledermaus and Tamerlano are both part of what genre of classical music?
Context: John Stoddart is an Australian opera stage designer.  Born in Sydney, he began as an architect.  On his first British commission, he designed the stage for Anthony Besch's production of "Così fan tutte" in 1967 at the Scottish Opera, where he continued to work.  In 2000 he collaborated with John Cox to stage "Capriccio" at the Sydney Opera House during the 2000 Summer Olympics.  Aside from "Capriccio", with Opera Australia he has designed the sets for "The Magic Flute", "Ariadne auf Naxos", "Patience", "The Beggar’s Opera", "Die Fledermaus", "Les Huguenots", "Don Carlos", "A Streetcar Named Desire", "Of Mice and Men", and "Die tote Stadt". Bernhard Bötel (1883–1953) was a German operatic tenor and actor who had an active career in Germany and Austria during the first half of the 20th century.  He made recordings for several record labels during the early years of the recording industry, including His Master's Voice, Odeon Records, Polydor Records, Tri-Ergon, and Vox Records.  On the stage he sang a variety of roles in operas and operettas from leading parts to comprimario roles.  His stage repertoire included Belmonte in Wolfgang Amadeus Mozart's "Die Entführung aus dem Serail", Chapelou in Adolphe Adam's "Le postillon de Lonjumeau", Count Almaviva in Gioachino Rossini's "The Barber of Seville", Daniel in Franz Lehár's "The Merry Widow", the Duke of Mantua in Giuseppe Verdi's "Rigoletto", Gabriel von Eisenstein in Johann Strauss II's "Die Fledermaus", Indigo in Strauss' "Indigo und die vierzig Räuber", Jeník in Bedřich Smetana's "The Bartered Bride", Paolino in Domenico Cimarosa's "Il matrimonio segreto", Pâris in Jacques Offenbach's "La belle Hélène", Pietro in Franz von Suppé's "Boccaccio", and Wilhelm Meister in Ambroise Thomas' "Mignon". Arlene Saunders (born in Cleveland, on October 5, 1935) is an American spinto soprano opera singer.  After making her operatic debut as Rosalinde von Eisenstein, in "Die Fledermaus", with the National Opera Company in 1958, she made her first appearance with the New York City Opera in 1961, as Giorgetta in "Il tabarro" (conducted by Julius Rudel).  With that company, she soon sang in "Carmen" (as Micaëla), "La bohème" (as Mimì), "Louise" (opposite Norman Treigle as the Père), "Die lustige Witwe" and "Don Giovanni" (as Donna Elvira). Die Fledermaus (] , "The Bat", sometimes called "The Revenge of the Bat") is an operetta composed by Johann Strauss II to a German libretto by and Richard Genée. Scandal at the Fledermaus (German:Skandal um die Fledermaus) is a 1936 German comedy film directed by Herbert Selpin and starring Viktor de Kowa, Maria Andergast and Adele Sandrock. Tamerlano ("Tamerlane", HWV 18) is an opera seria in three acts written for the Royal Academy of Music theatre company, with music by George Frideric Handel to an Italian text by Nicola Francesco Haym, adapted from Agostin Piovene's "Tamerlano" together with another libretto entitled "Bajazet" after Nicolas Pradon's "Tamerlan, ou La Mort de Bajazet". Lamplighters Music Theatre is a semi-professional musical theatre company based in San Francisco, California.  Founded in 1952 by Orva Hoskinson and Ann Pool MacNab, the Lamplighters specialize in light opera, particularly the works of Gilbert and Sullivan, as well as such works as "The Merry Widow", "Die Fledermaus", "Of Thee I Sing", "My Fair Lady", "Candide", and "A Little Night Music". Nico van der Meel is a Dutch tenor.  He made his debut with the Concertgebouw Orchestra during the 1987/1988 season and made a recording of Bach's "St John Passion", conducted by Sigiswald Kuijken.  Between 1989 and 1996, he made several tours and recordings of Bach's "Mass in B minor" and "St Matthew Passion".  He has since performed with conductors such as Nikolaus Harnoncourt, John Eliot Gardiner, Gustav Leonhardt, Peter Schreier, Jan Willem de Vriend, Helmuth Rilling, Michel Corboz and Sir Colin Davis.  He has also performed in a number of operatic roles, including Alfred in "Die Fledermaus" by Johann Strauss, Sellem in Igor Stravinsky's "The Rake's Progress", Pedrillo in Mozart's "Die Entführung aus dem Serail" under Christopher Hogwood, among others.  He is a member of the group Camerata Trajectina and conducts the William Byrd Vocal Ensemble, which specializes in a cappella music from the 16th to the 20th century. Die Fledermaus is a 1962 Austrian musical film directed by Géza von Cziffra and starring Peter Alexander, Marianne Koch and Marika Rökk.  It is an adaptation of the operetta "Die Fledermaus" by Johann Strauss II, Karl Haffner and Richard Genée. Die Fledermaus is a 1923 German silent film directed by Max Mack and starring Eva May, Lya De Putti and Harry Liedtke.  It is an adaptation of the operetta "Die Fledermaus" by Johann Strauss II, Karl Haffner and Richard Genée.
Answer: opera