Musical is a sitcom composed of music, dance and other forms of performance. Opera is a kind of drama similar to movies, with more professional bel canto, in which lines are also sung with melody. Of course, some classic arias are also needed to support the soul of the whole opera. Drama is mainly a kind of drama performed in popular Mandarin or dialect. The common feature of the three operas is that they all reveal various social phenomena at that time, giving people spiritual baptism and rich content. Personal point of view. Musical drama is a kind of stage art which originated in America, and it is the product of industrial civilization and urban civilization. Its origin has three sources: 1, European opera 2, American black music 3, American 18~ 19 current affairs show, rich man show and other stage performances. Music forms include: scripts, drama poems (lyrics are different from lyrics), music, dance and beautiful dance design (including stage supervision, stage scenery, etc.)