Polka northern Mexico and Texas, and are also called "Norteño". Traditional dances from this region reflect the influence of polka-dancing European immigrants. In the 1980s and 1990s, several American bands began to combine polka with various rock styles (sometimes referred to as "punk polka"), "alternative polka", or "San Francisco-style". There also exist Curaçaoan polkas, Peruvian polkas (becoming very popular in Lima). In the pampas of Argentina, the "polca" has a very fast beat with a time signature. Instruments used are: acoustic guitar (usually six strings, but sometimes seven strings), electric or acoustic bass (sometimes fretless), accordion (sometimes piano accordion, sometimes button
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