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 the United States polka entertainment". Today, the IPA still carries out yearly conventions every summer to allow polka fans to gather and to present the annual Polka Music Awards. The IPA established the Polka Music Hall of Fame in 1968 to honor worthy performers. In 1982, a building was established to house the Polka Music Hall of Fame and Museum. Throughout the United States (and especially through the so-called "polka belt"), polka fans gather to participate in polka festivals. Many of these festivals are arranged by organizations such as the IPA and the United States Polka Association. Others, such as Polish-style performer Eddie