The eldest son of Joh. Sebastian studied with his father and with J. G. Graun. Johann Sebastian's pedagogical Notebook (Clavier-Büchlein) for Wilhelm Friedemann provides explicit instructions for ornamentation which are an important source of information about eighteenth-century performance practice. In 1733 Wilhelm Friedemann became organist in Dresden and thirteen years later at Halle (a position offered many years before to his father). Also known as the "Halle" Bach, Wilhelm Friedemann composed concertos, fantasias, sonatas, fugues, and symphonies. He may also have participated in the composition of his father's Inventionen and Sinfonien which were originally published in the Clavier-Büchlein.