Johann Sebastian Bach (1685 - 1750) <br /> <br />“Duetto III”, BWV 804 <br />(Clavier-Übung III) <br /> <br /> <br />Léon Berben, organ <br /> <br /> <br />October 2013, Christoph Treutmann organ (Grauhof 1737), the Collegiate church of Saint George, Grauhof (Goslar), Germany.
