jan 1, 1400 - Birth of the harpsichord
1397 : first mention of the "clavicembalum", in a private correspondence.
1425 : first potential graphical representation of the instrument in the altarpiece of the cathedral of Minden, Germany (however the sound board indicates notes going from high to low, left to right)
1470-1480 : estimated date of creation of the oldest harpsichord.
Added to timeline:
A representation of the different eras of "classical" music ...