He also worked in Braunschweig and Graz before being appointed chief conductor at the Vienna State Opera in 1940 until his death.
In 1942 he made a series of renowned recordings conducting the orchestra of the State Opera with the Austrian soprano Maria Reining.
[1] A reliable, unaffected and deeply sympathetic conductor, Moralt was responsible for a high standard of repertory performances in Vienna for almost twenty years.
Though overshadowed by the more famous conductors of his time, he nevertheless achieved many notable performances, especially of works by Mozart, Wagner, Strauss, Pfitzner.
His records include a celebrated Ring Cycle, a notable Don Giovanni and a superbly played Salome which shows how exceptional his musicianship could be when he had adequate rehearsal time.