The document traces the origins and evolution of musical theatre from ancient Greek theatre, which used choruses to tell religious stories, to modern forms like vaudeville, burlesque and golden age musicals of the 1940s featuring famous actors. Key developments included the first English ballad opera in 1728, music halls in 1830s that attracted all classes, burlesque becoming full-length productions in the 1860s, vaudeville combining various acts in the 1870s, and golden age musicals of the 1940s spawning film adaptations. Modern musicals are often aimed at children or adapted into major motion pictures.