The first accordion to feature a piano keyboard was probably the instrument introduced in 1852 by Bouton of Paris. Another source claimed the first piano accordion was introduced in 1854 at the
General German Industrial Exhibition in
Munich. It was showcased by the instrument builder Mattäus Bauer and quickly became a serious competitor to button accordions. The first chromatic piano-like accordions in Russia were built in 1871 by Nikolay Ivanovich Beloborodov. In the United States, the piano accordion dramatically increased in popularity between 1900 and 1930 because of its familiarity to students and teachers, and its uniformity, whereby accordion dealers and instructors did not have to support different styles of accordions for many European immigrant groups. The piano keyboard layout was also promoted by the fame of Vaudeville performers
Guido Deiro and his brother
Pietro who premiered the instrument on stage, recordings and radio. After the Deiros' success, popular chromatic button accordionist
Pietro Frosini chose to disguise his accordion's buttons to look like a piano keyboard so as not to appear "old-fashioned." (See
Accordion music genres) As of 1972 it could be largely said that the piano system dominated the English-speaking North American continent, Scotland, and certain East European countries, while differing button systems are generally to be found in Scandinavia, France, Belgium and
former Soviet countries. The piano accordion is also predominant in Italy, New Zealand, Australia and South Africa. ==See also==