In 1945, the Wiener Mozart-Ensemble was formed, which put on world-renowned guest performances and became known particularly for its singing and playing culture. The Austrian conductor Josef Krips was the founder and mentor, who had only survived the Nazi era (given his Jewish heritage) thanks to luck and help from colleagues. At the end of the war, Krips started the renovation of the Staatoper, and was able to implement his aesthetic principles, including the departure from the Romantic Mozart ideal with a voluminous orchestral sound. Instead, qualities more associated with chamber music were featured, as well as a clearer, lighter sound, which would later come to be known as "typically Viennese". Singers who worked with Krips during this time were Erich Kunz, Elisabeth Schwarzkopf and Wilma Lipp, among others.