minor key are in the middle row; free bass notes are in the inner row. One free bass accidental note is included. There are also 36*36 garmon accordions which have a third row of buttons including more accidentals and high notes, as well as more free bass notes. Russian types Since the introduction of the accordion from Germany to Russia in the 1830s, Russian masters invented a lot of different types of local garmons during the 19th and 20th centuries. Khromka The () was invented in 1870 in Tula by Russian musician Nikolay Beloborodov. It was a unisonoric (like the bayan or piano accordion), diatonic accordion but on the right keyboard there were also two or three chromatic buttons, usually g1♯, d2♯, f2♯, hence the name khromka. It became the most popular and widespread button accordion in Russia, so almost all modern Russian (as well as Soviet) garmons (usually made in Tula and Shuya factories) are khromkas. Tula garmon Tula garmon () was the first Russian accordion, which began to be manufactured since the 1830s. It had five or seven buttons on the right keyboard, and like in the most Western diatonic accordions it produced different sounds on pull and push. So Tula garmon had two full diatonic octaves (from C4 to C6). The left bass keyboard had two buttons. Tula garmon was a base for all the Russian diatonic bisonoric garmoshkas (Saratov, Kasimov etc.) Vyatka garmon Vyatka garmon () first appeared on the factories of Vyatka governorate in the middle of the 19th century. It was chromatic unisonoric, it had a piano keyboard on the right side and two bass buttons on the left one. Vyatka garmon was a prototype for many different types of national accordions in the Volga region and the Caucasus (see below). Also after it there were made Russian diatonic and chromatic accordions: Elets "royal" (means with a piano keyboard, because in Russian a grand piano is called "royal") garmon, Beloborodov's royal garmon (made by Tula master Chulkov in the 1870s on the design of Beloborodov, it had a full chromatic right keyboard and resembled modern piano accordions) and others. Saratov garmon The Saratov garmon () is a diatonic, bisonoric garmoshka with bells which ring when the bass and chord keys are played. Lidia Ruslanova sang to the accompaniment of this garmonika. Livenka The livenka () or Livenskaya garmoshka () was developed in the 1860s