Henri-Joseph van Casteel: The Silent Architect of Sound Henri-Joseph van Casteel (1722 – 1790) remains a figure shrouded in relative obscurity, yet his contribution to the burgeoning world of musical instrument making during the Enlightenment is undeniable. Born in Tournai, Belgium, he emerged from humble beginnings as a craftsman’s son and swiftly ascended to become one of the most respected builders of pianos in his era—a testament…