An operetta is a light, often humorous musical theater piece that combines singing, acting, and spoken dialogue. It typically features a simple plot, catchy melodies, and a lively atmosphere. Operettas are shorter than traditional operas and often include elements of comedy, romance, and satire. The genre became popular in the 19th century, with notable composers like Jacques Offenbach and Gilbert and Sullivan leading the way. Operettas are performed in various languages and can be enjoyed by audiences of all ages, making them a beloved form of entertainment in theaters around the world.