Die Soldaten
Raised in Argentina, he first worked in Vienna and was Generalmusikdirektor (GMD) of the Royal Swedish Opera. He conducted notable world premieres such as György Ligeti's "Requièm", Karlheinz Stockhausen's "Carré", and Bernd Alois Zimmermann's opera "Die Soldaten" and his "Requiem für einen jungen Dichter". He directed the Oper Frankfurt from 1977 to 1987, installing more contemporary operas, winning stage directors such as Hans Neuenfels and Ruth Berghaus, and reviving operas such as Schreker's "Die Gezeichneten". During his era, the company became one of the leading operas.