The Piano

Polyphony emerged in Europe about a thousand years ago, when religious chants were performed by several singers who each added a melody line of their own. The instrument most suitable to perform polyphonous music is of course the piano since you can play several notes at the same time and thus perform different voices synchronously. Today keyboards come in many kinds and shapes. Electronic keyboards have become very popular. But the keys have not changed much in all these centuries. Can you play on a keyboard? Do you own one? Can you play different voices at the same time, for example a canon?
Music and musicians travel easily since they are understood everywhere. Who were the piano builders in your area, who the virtuoso soloists and who wrote compositions for the keyboard?   And also, where did they learn their art, where did they travel to offer their services abroad.