The modern piano (the pianoforte) was developed from the harpsichord around 1720, by Bartolomeo Cristofori of Padua, Italy. His new instrument had a delicate pianissimo (very soft sound), a strong fortissimo (a very loud, forceful sound), and every level in between.
The first upright piano was made around 1780 by Johann Schmidt of Salzburg, Austria. Thomas Loud of London developed an upright piano whose strings ran diagonally (in 1802), saving even more space.
source: enchantedlearning.com
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