Wolfgang Hartl has passed away. He was 88. Hartl was born in 1937. He was the great-nephew of Arnold Schoenberg. In 1970, Hartl established Austroconcert International Music Management. For more than 50 years Austroconcerts managed a roster of distinguished classical artists performing throughout the world. Hartl worked with opera great such as Luciano Pavarotti, Mirella Freni, Friedrich Gulda, Heinrich Schiff, {…}