Die Fledermaus and Tamerlano are both part of what genre of classical music?
Tamerlano 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".
Montezuma (Graun) Montezuma is an opera seria in three acts by the German composer Carl Heinrich Graun. The libretto was written in French by Graun's patron, Frederick the Great, the King of Prussia, and turned into an Italian libretto by Giampetro Tagliazucchi.