This composer responded to an official reprimand by writing several baryton trios for a prince to perform. A melody beginning (read slowly) “long G, short A, B, A” appears in the Poco adagio second movement of a piece by this composer dedicated to Count Erdödy. This composer wrote collections nicknamed “Russian” and “Sun” while employed by (10[1])the (10[1])Esterházy court. It’s not Beethoven, but a (10[1])piece by this composer nicknamed “Emperor” was the basis for the national anthem of Germany. This composer is credited with pioneering a chamber music genre where a cello (10[2])and viola are joined by two violins. For 10 points, name this Austrian “father of the (10[1])string (0[8])quartet.” ■END■