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
Polonaise-Fantaisie (Chopin) and Vladimir Horowitz had been including it in their programs some decades earlier. It is intimately indebted to the polonaise for its metre, much of its rhythm, and some of its melodic character, but the fantaisie is the operative formal paradigm (Samson, 1988), and Chopin is said to have referred initially to the piece only as a Fantasy. Parallels with the Fantaisie in F minor include the work's overall tonality, A-flat, the key of its slower middle section, B major, and the motive of the descending fourth. Jeffrey Kallberg has suggested that the Polonaise-Fantaisie represents a change in Chopin's style