(29 май 1771 г. – 31 дек 1771 г.)
Описание:
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.Добавлено на ленту времени:
Дата:
29 май 1771 г.
31 дек 1771 г.
~ 7 months