Which theatrical genre is based on comical situations or light poetry, interspersed with songs or ballets?

Vaudeville is a theatrical genre of variety entertainment born in France at the end of the 19th century. A vaudeville was originally a comedy without psychological or moral intentions, based on a comical situation: a dramatic composition or light poetry, interspersed with songs or ballets. It became popular in the United States and Canada from the early 1880s until the early 1930s, but the idea of vaudeville's theatre changed radically from its French antecedent.

Vaudeville developed from many sources, also including the concert saloon, minstrelsy, freak shows, dime museums, and literary American burlesque. Called "the heart of American show business", vaudeville was one of the most popular types of entertainment in North America for several decades.