Carl Heinrich Graun, the more distinguished brother of Johann Gottlieb, served ten years as a court musician in Brunswick (beginning in 1725) whereafter he attached himself to the service of crown prince Frederick (later "the Great"). In 1740, when Frederick ascended to the Prussian throne, Carl Heinrich became his Kapellmeister. While in Berlin C. H. Graun formed an opera company featuring Italian musicians. In addition to operas (librettos by king Frederick), Graun composed passions, cantatas, concertos, trio sonatas and works for organ. Carl Heinrich is mentioned in C.P.E. Bach's 1775 letter to Forkel as one whose works his father especially valued in his later years. Graun joined the Mizler society just before Bach.