The Steirische Harmonika (pronounced sht-irish-eh harmonica) is a type of bisonoric diatonic button accordion important to the alpine folk music of Austria, the Czech Republic, Slovenia, the German state of Bavaria, and the Italian South Tyrol. The Steirische Harmonika is distinguished from other diatonic button accordions by its typically richer bass notes, and by the presence of one key per scale row that has the same tone on both compression and expansion of the bellows, called a Gleichton. The bass notes earn the distinction Helikonbässe because the use bigger reeds with duralumin reed frames and a special chamber construction that amplifies its bass tones to give it a loud sound reminiscent of a Helicon tuba.
The name "Steirische Harmonika" literally translates from German as Styrian accordion, but the use of the adjective steirische stems from the Viennese dialect, where it refers to the folk music in general. There is no relationship to the nearby state of Steiermark, or Styria as it is traditionally called in English, even this types of Accordion are in use there as well.
The Steirische Harmonika has a right-handed melody side and a left-handed bass side. On the melody side, there are three to five rows of buttons where each row has its own key. Accordions with five rows are not a lot in use, but most builders do produce quite a few. On the compression of the bellows, the buttons of one row play the tones from the key's tonic, and on the expansion of the bellows, the buttons of one row play tones from the key's dominant seventh. The button which plays the same tone on both the expansion and compression of the bellows is called the Gleichton, translatable from German as "same-tone". Often melodies require playing buttons from different rows because they cannot be decomposed into tones from the tonic and dominant seventh of a given key.
For each row on the right hand melody side, there are two associated buttons on the outer row of the bass side: one for the root, and one for the harmony. On compression, they play the tonic, and on expansion, the dominant. The function of the inner row, however, varies by manufacturer.
Technical Steirische Accordion playing is very advanced especially in Bavaria, Austria and Slovenia.
Weltmeister awards on Steirische Harmonika 
- 1987 Zoran Lupinc
- 1996 Toni Bartl
- 1997 Jakob Bergmann
- 1999 Robert Goter
- 2007 Markus Oberleitner
- 2009 Nejc Pačnik
Others Well-known artists 
- Slovenia: Franc Mihelic, Lojze Slak, Tina Lesjak, ....
- Austria: Erwin Aschenwald, Erwin Aschenwald Jr.
To help aid playing the Steirische Harmonika, the Verlag Helbling publishers patented in 1916 a tablature, which no longer is in current use. It has come to be replaced by a notation called Griffschrift, which was invented by a music teacher from Bärnbach in Styria named Max Rosenzopf. The notation appears similar to modern notation but maps tones differently to positions on the staff. In 1975 Rosenzopf founded the Verlag Preissler publishing company and printed the first book using the Griffschrift to teach reading notes. Now all notes for the Steirische Harmonika are printed using this notation.
- Haertel, Hermann. "The "Steirische"".
- Gutleder, Helmut (2006). Die Entwicklung der Harmonikaerzeugung in Österreich (in German). Salzburg: Mozarteum University of Salzburg.
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- Script for key layout and displaying chords (Fingering)
- Key layouts
- Questions and a list of builders of Steirischen Harmonikas
- List with web links - makers of Steirischen Harmonikas