Keywords: Grand Piano 1781 France - Louis Bas.jpg en Grand piano by Louis Bas of Villeneuve-lès-Avignon France 1781 <p> Earliest French grand piano known to survive; includes an inverted wrestplank and action derived from the work of Bartolomeo Cristofiori ca 1700 with ornately decorated soundboard Collection of the National Music Museum Vermillion SD USA own Photo by author Charvex 2008-08 Public domain Fortepiano Louis Bas Villeneuve-lès-Avignon France 1781 instrument productions Bartolomeo Cristofiori 1700s instrument productions National Music Museum Vermillion |