Wilhelm Friedemann Bach was a German keyboardist and composer. He was the oldest son of Johann Sebastian Bach and Maria Barbara Bach. He worked in Dresden, Halle, Braunschweig, and finally Berlin. He was regarded as one of the greatest organist of his time and is renowned for his organ improvisations. In Halle, the Wilhelm-Friedemann-Bach-Haus is named after him; a museum dedicated to him and six other composers of his time, in a house where he used to live. Wilhelm Friedemann's music shows the same 'architectual' proficiency known from his father, particular in his counter point. Moreover, he was looking for new ways of expression, with many mood swings and changes in rhythm, Wilhelm Friedemann was clearly an exponent of a new literal and musical movement of his time, the Sturm und Drang.