Polka in the 19th century also wrote many polkas to satisfy the demands of the dance-music-loving Viennese. In France, another dance-music composer Emile Waldteufel also wrote many polkas in addition to his chief profession of penning waltzes. The polka evolved during the same period into different styles and tempi. In principle, the polka written in the 19th century has a 4-theme structure; themes 1A and 1B as well as a 'Trio' section of a further 2 themes. The 'Trio' usually has an 'Intrada' to form a break between the two sections. The feminine and graceful 'French polka' (polka française) is slower
Polka in tempo and is more measured in its gaiety. Johann Strauss II's Annen Polka op. 114, Demolirer polka op. 269, the Im Krapfenwald'l op. 336 and the Bitte schön! polka op. 372 are examples of this type of polka. The polka-mazurka is also another variation of the polka, being in the tempo of a mazurka but danced in a similar manner as the polka. The final category of the polka form around that time is the "polka schnell", which is a fast polka or "galop". Eduard Strauss is better known for this last category, as he penned the 'Bahn Frei'