- Anne Beetem Acker
(flc1780–90). French keyboard instrument maker. Little is known about him; possibly he was related to the harpsichord builder Jean Bas of Marseille. A grand piano (1781, US.V.n) by Louis Bas, the earliest known French grand (excepting Johann Heinrich Silbermann’s from Strasbourg), is inscribed ‘Villeneuve lès Avignon’ on its interior. Inscriptions on two spinets seem to indicate that he worked in Marseille in ...