He spent much of his time from the 1950s onward in Germany as music director of the Bavarian State Opera ( 1956-1958 ) and as conductor of the RIAS Symphony Orchestra , the Deutsche Oper Berlin and the Berlin Philharmonic .
He spent much of his time from the 1950s onward in Germany as conductor of the Bavarian State Opera ( 1956-1958 ) , the RIAS Symphony Orchestra , the Deutsche Oper Berlin and the Berlin Philharmonic .