Final answer:
Musical theatre is a form of theatre that uses contemporary popular music to tell a story. It combines different art forms and is highly entertaining. Popular musicals include Cats, The Phantom of the Opera, and Mamma Mia.
Step-by-step explanation:
Musical theatre is a form of theatre that uses fairly contemporary popular music of a singular performer or music group and crafts a story to fit with the already popular music. It combines dance, music, and theatre to create a unique and entertaining experience for the audience. Examples of popular musicals include Cats, The Phantom of the Opera, and Mamma Mia.