Polka in the United States is an example of the way some polka bands have tried to break free of the restrictions of genre and adapt to modern culture. From tiny ethnic dance halls to larger-scale national organizations, there is a huge network of people working to keep the polka alive. One Web site lists a total of 49 formal polka clubs nationwide, and there are many other smaller organizations . The largest organizations today include the International Polka Association (IPA), the United States Polka Association, the Polka Lovers Klub of America (Po.L.K. of A.), the Cleveland-Style Polka Hall of Fame, the Penn-Ohio Polka Pals,
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'