Like a play, operas are divided into acts, and these are subdivided into scenes.
Opera is a type of theatre in which singers play dramatic roles and music plays a major part. Such a "work" (literally, "opera" in Italian) is usually the result of a partnership between a composer and a librettist and combines a variety of performing arts, including acting, scenery, costume, and occasionally dance or ballet.
A conductor has been in charge of the orchestra or other musical ensemble since the early 19th century, and the performance is normally held in an opera theatre. Despite their close relationship, opera and musical theatre are seen as separate art forms.
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