Sébastien Érard & The Double Escapement Action - YouTube
Robotran
200th Anniversary of Érard's Double Escapement Action
Made in Paris by master Sabastien Erard, and one of only 400 made. A rare original "90 note" Concert Grand featuring Erards brilliant 1821 patent "Double Escapement" mechanism still used in modern
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7) "Cristofori action" - Escapement action for earliest fortepiano by Bartolomeo Cristofori, 1726 - YouTube | Piano repair, Piano, Creative art
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200th Anniversary of Érard's Double Escapement Action
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