Musical theater: It evolved from comedy opera and operetta (or "operetta"). It was called "musical comedy" in the early days and was later called "musical theater" for short. An opera genre that originated in England at the end of the 19th century, it is a dramatic form that combines dialogue and singing. The musical combines drama, music, singing and dancing, and is full of humor and comedy. Its music is easy to understand and therefore very popular with the public. Musicals are performed all over the world, but they are most frequently performed on Broadway in New York City in the United States and in the West End of London in the United Kingdom. Therefore, the term Broadway musical can refer to musicals performed on Broadway, and often refers to all musicals similar to Broadway style.

Opera is a comprehensive art that integrates music (vocal and instrumental music), drama (script and performance), literature (poetry), dance (folk dance and ballet), stage art, etc. , usually composed of arias, recitatives, duets, choruses, overtures, intermezzos, dance scenes, etc. (sometimes spoken and recited). As early as ancient Greek dramas, there were chorus accompaniments, and some recitations even appeared in the form of singing. In the Middle Ages, miracle plays based on religious stories and promoting religious views were also popular and continued. But modern Western opera, which can truly be called "musical drama", came into being with the secularization of music culture during the Renaissance in the late 16th and early 17th centuries.