point for the new French musical theatre tradition. Hervé's most famous works are the Gounod parody Le petit Faust (1869) and Mam'zelle Nitouche (1883). Jacques Offenbach is most responsible for the development and popularization of operetta—also called or —giving it its enormous vogue during the Second Empire and afterwards. In 1849, Offenbach obtained permission to open the Théâtre des Bouffes Parisiens, a theatre company that offered programs of two or three satirical one-act sketches. The company was so successful that it led to the elongation of these sketches into an evening's duration. However, Offenbach's productions were bound by the police prefecture in Paris, which specified the type of performance that would be allowed: "pantomimes with at most five performers, one-act comic musical dialogues for two to three actors, and dance routines with no more than five dancers; choruses were strictly forbidden." These rules defined what came to be defined as operetta: "a small unpretentious operatic work that had no tragic implications and was designed to entertain the public". Two other French composers, Robert Planquette and Charles Lecocq, followed Offenbach's model and wrote the operettas Les Cloches de Corneville (The Bells of Normandy) and La Fille de Madame Angot (The Daughter of Madame Angot). The two operettas were considered a major hit. The political limitations placed on Offenbach and Parisian theatre were gradually lifted, and operetta gained wide popularity. While Offenbach's earliest one-act pieces included Les deux aveugles, Le violoneux and Ba-ta-clan (all 1855) did well, his first full-length operetta, Orphée aux enfers (1858), was by far the most successful. It became the first repertory operetta and was staged hundreds of times across Europe and beyond. Offenbach's legacy is seen in operettas throughout the late 19th century and beyond by encouraging Strauss the Younger to bring the genre to Austria-Hungary. Offenbach also traveled to the US and England educating musicians on the more than 100 operettas he wrote during his lifetime. This international travel resulted in the appearance of strong national schools in both nations. By the 1870s, however, Offenbach's popularity declined. The public showed more interest in romantic operettas that showed the "grace and refinement" of the late Romantic period. This included Messager's operetta Véronique and Louis Ganne's Les saltimbanques. The 20th century found French operetta even more out of favor as the international public turned to Anglo-American and Viennese operettas, which continued to develop the art form into the