Sung dramas, also known as operas, are a form of musical theatre in which the story is told through a combination of singing, spoken dialogue, and music. They typically feature elaborate costumes and sets, and often include elements of dance and acrobatics. Operas originated in Italy during the 16th century and have since spread to many other countries around the world. They are usually performed in large theatres or opera houses, and can range from light-hearted comedies to grand, tragic epics.