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 polka op. 45 and other examples. Earlier, Johann Strauss I and Josef Lanner wrote polkas designated as a "galop" (quick tempo) or as a regular polka that may not fall into any of the categories above. The polka was a further source of inspiration for the Strauss family in Vienna when Johann II and Josef Strauss wrote one for plucked string instruments (pizzicato) only, the well-known 'Pizzicato polka'. Johann II later wrote a 'New pizzicato polka' (Neu pizzicato-polka), opus 449, culled from music of his operetta 'Fürstin Ninetta'. Much earlier, he also wrote a 'joke-polka' (German "scherz-polka") entitled 'Champagne-polka', opus