Task: Explanation
Input (English): Opera seria (] ; plural: "opere serie"; usually called "dramma per musica" or "melodramma serio") is an Italian musical term which refers to the noble and "serious" style of Italian opera that predominated in Europe from the 1710s to c. 1770. The term itself was rarely used at the time and only attained common usage once "opera seria" was becoming unfashionable and beginning to be viewed as a historical genre. The popular rival to "opera seria" was "opera buffa," the 'comic' opera that took its cue from the improvisatory commedia dell'arte. Question: What year did the genre of opera in which Josef Mysliveček contributed to eventually end? Answer: 1770
Output (English): Opera seria  ; plural: opere serie; usually called dramma per musica or melodramma serio is an Italian musical term which refers to the noble and serious style of Italian opera that predominated in Europe from the 1710s to c. 1770.