(29 magg 1771 anni – 31 dic 1771 anni)
Descrizione:
Johann Zumpe’s design of piano was expanded greatly by English inventor John Broadwood, who added more octaves to cover treble and bass, added pedal and strings were much more robust and lauder.Aggiunto al nastro di tempo:
Data:
29 magg 1771 anni
31 dic 1771 anni
~ 7 months