クレメンス・クラウス
In 1950, Gielen moved to Vienna where his father had become director of the Burgtheater. Michael Gielen was conductor and répétiteur, who conducted at the Wiener Staatsoper from 1954 to 1960, assisting conductors such as Karl Böhm, Herbert von Karajan and Clemens Krauss. He conducted contemporary music outside the opera house.