Complex sentence: He was soon generally recognized as one of the most skilful organists of his time; and in 1751, as the result of a comic opera, "Il Filosofo convinto in amore", performed at Potsdam, he was made court composer to Frederick the Great.
Split into simpler sentences: He was soon generally recognized as one of the most skillful organists of his time. The success of his comic opera, "Il Filosofo convinto in amore", performed at Potsdam in 1750, led to an appointment as court composer to Frederick the Great.