The Livenka (Ливенка), or Livenskaya Garmoshka (Ливенская Гармошка) is a class of diatonic button accordions that take their name from the Russian city of Livni, where they originated. They are unisonoric, and limited to a diatonic scale. The right hand buttons play the notes of the mixolydian mode. The left hand valves play thirds and fourths and are arranged to be played in pairs to make chords. some instruments also have bisonoric chord buttons on the end of the left side, situated to be operated with the thumb.
The bellows of these instruments are usually quite long, sometimes nearly two meters, and containing forty folds.
Some more recent versions of the instrument have chromatic tones added to the right side.
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